Policy 05: Remove the requirement to blend ethanol into gasoline. Grow food instead.

Researched: 2026-07-22. Status: draft.

The plank

This current policy is madness. It's the equivalent of taking billions of dollars and lighting them on fire.

To compensate farmers, shift subsidies to fruits and vegetables.

README.md and app/templates/index.html agree on this plank's wording — no drift to fix. (Unrelated: Policy 4's title does drift between the two files — "Disintermediate" vs. "Separate" — flagged here since it was noticed during this pass.)

One framing correction the research forces on us: the plank says "grow food instead," but the strongest, most defensible version of this plank is "stop mandating a fuel market for corn." Whether the freed land grows fruit, vegetables, other grain, or reverts to grass/conservation is a market outcome we should not over-promise. See "Open questions."

The problem

The federal government requires refiners and fuel importers to blend renewable fuel — overwhelmingly corn ethanol — into gasoline. The Renewable Fuel Standard (RFS) was created by the Energy Policy Act of 2005 and expanded by the Energy Independence and Security Act of 2007 (EISA), codified at Clean Air Act §211(o), 42 U.S.C. §7545(o). EISA scheduled 36 billion gallons of renewable fuel by 2022, of which 21 billion was supposed to be "advanced" biofuel (16 billion cellulosic), leaving an implied 15-billion-gallon lane for conventional corn ethanol (CRS R43325; DOE AFDC).

What actually happened, with numbers:

• The advanced-fuel promise failed; the corn mandate stayed. Cellulosic biofuel was supposed to reach 16 billion gallons by 2022; actual cellulosic production remains a rounding error, and EPA has waived the cellulosic volumes down every year (EPA partially waived the 2025 cellulosic requirement as recently as its 2026 rulemaking — Federal Register, April 1, 2026). The corn-ethanol lane, by contrast, has been maintained at the full 15 billion gallons: EPA's final 2026–2027 RFS rule (announced March 27, 2026) keeps the implied conventional volume at 15 billion gallons and sets record total volumes (EPA; American Farm Bureau, 2026).
• Scale. The US produced about 15.6 billion gallons of fuel ethanol in 2023, essentially all from corn (EIA, 2024). USDA put corn used for ethanol at 5.45 billion bushels in both the 2023/24 and 2024/25 marketing years (USDA WASDE via Ethanol Producer, 2024). That is roughly 45% of total domestic corn use and on the order of 35–40% of the harvest (USDA ERS, feed grains sector at a glance, 2024) — the source of the "~40% of the corn crop" talking point. Honest caveat we must always carry: roughly a third of each bushel returns to the feed market as distillers grains, so the net diversion of corn away from food/feed is meaningfully smaller than the gross 40% — closer to a quarter to a third of the crop (estimate, derived from standard DDGS yield figures; flag as such).
• Fuel economy cost to drivers. Ethanol contains about one-third less energy per gallon than gasoline; vehicles typically go 3–4% fewer miles per gallon on E10 than on pure gasoline (fueleconomy.gov (DOE/EPA); EIA FAQ). Caveat for honesty: ethanol per gallon frequently prices below gasoline blendstock, so the net per-mile cost to drivers varies with relative prices and is sometimes near zero; the mpg penalty alone is not a clean dollar figure.
• Food and crop prices. CBO found ethanol's growth accounted for about 10–15% of the rise in food prices between April 2007 and April 2008 (CBO 2009, via CBS summary; primary report: CBO, "The Impact of Ethanol Use on Food Prices and Greenhouse-Gas Emissions," April 2009). A meta-analysis of 29 studies found each additional billion gallons of mandated ethanol raises corn prices ~3–4% (Condon, Klemick & Wolverton, Food Policy, 2015; EPA working-paper version). Lark et al. estimate the RFS raised corn prices ~30% and other crop prices ~20% over 2008–2016 (Lark et al., PNAS, 2022).
• Land and water. Lark et al. (2022) attribute to the RFS an expansion of corn cultivation by 2.8 million hectares (6.9 million acres, +8.7%) and total US cropland by 2.1 million hectares (5.2 million acres, +2.4%) from 2008–2016, raising nationwide fertilizer use 3–8% and water-quality degradants 3–5%. A 2024 follow-on econometric study also finds major RFS impacts on corn and soybean cultivation (Smith et al., JAAEA, 2024).
• The climate justification is, at best, contested. See "Evidence" — this is the genuine scientific dispute at the heart of the plank, and we present both sides there.
• Compliance machinery costs are real and pass through to consumers. Refiners comply via Renewable Identification Numbers (RINs) — tradable credits generated per gallon of biofuel blended. Conventional-ethanol (D6) RIN prices swing violently: $0.89/RIN in October 2023, $0.40 in February 2024 (EIA), and back near record highs in 2026 after EPA's higher 2026–2027 volumes (EIA, 2026). The best empirical work finds RIN costs pass through fully into wholesale fuel prices within about two business days (Knittel, Meiselman & Stock, JAERE, 2017; NBER w21343, 2015). Because ethanol blending itself generates the RINs, the net consumer price effect of the mandate is smaller than gross RIN volumes suggest — but the volatility, litigation (small-refinery exemptions), and administrative apparatus are pure deadweight.

How it shows up in an ordinary person's life: slightly worse gas mileage on every tank (3–4% on E10, dated 2024–2026 DOE guidance); somewhat higher grocery prices via corn's role in feed, sweeteners, and oils (10–15% of the 2007–08 spike per CBO; smaller in normal years); tens of billions of federal tax expenditure now flowing to biofuel producers via the 45Z credit (below); and roughly 30 million acres of American farmland — an area the size of Pennsylvania — growing fuel for engines that would run at least as well without it.

Who profits from the status quo

All figures dated; this section must survive a defamation review, so it states only documented facts about lawful lobbying and market positions.

• POET LLC (Sioux Falls, SD) — the largest ethanol producer in the world, ~2.7 billion gallons of annual capacity across ~34 Midwest biorefineries (2024) (Statista, 2024; Farm Progress). POET spent $2.71 million on federal lobbying in 2024 (OpenSecrets), and around $1.3–1.5 million per year in the late 2010s (Roll Call, 2018).
• Archer Daniels Midland and Valero Energy — the #2–#3 producers; Valero operates 12 corn-ethanol plants with ~1.6 billion gallons of capacity (2024–2025) (Farm Progress). Valero is a useful complication for our story: it is an oil refiner that profits from ethanol, evidence that "oil vs. ethanol" is not a clean fight. Historic figures: Valero spent $2.6M+ lobbying 2006–2009 and its PAC gave $2.5M+ in the 2008 cycle (Vermont Law/OpenSecrets compilation, 2011).
• Trade associations: Growth Energy and the Renewable Fuels Association (RFA), plus the National Corn Growers Association and American Coalition for Ethanol. Growth Energy spent ~$1.2M lobbying in 2010 (OpenSecrets, 2011); Taxpayers for Common Sense has tracked the corn-ethanol lobby's political footprint in the tens of millions of dollars across cycles (TCS, 2013, updated). In 2025, reporting found the ethanol lobby outspent the oil lobby on the year-round-E15 fight (NOTUS, 2025).
• What the industry gains per year. The RFA's own commissioned analysis: in 2024 the ethanol industry bought $23 billion of corn, contributed $53 billion to GDP, and supported ~314,000 direct+indirect jobs; the 2025 edition claims $50 billion GDP and 317,000 jobs (RFA, Feb 2025; RFA, Feb 2026). These are industry-funded estimates using input-output multipliers — treat as an upper bound, but they are the industry's own statement of what is at stake.
• Taxpayer money now flowing directly. The blender's credit (VEETC, ~$6 billion/year) expired at the end of 2011, so for a decade the subsidy was the mandate itself. That changed with the Inflation Reduction Act's §45Z Clean Fuel Production Credit: JCT initially scored it at $8.4 billion over three years; the 2025 budget law extended it through 2029 and loosened eligibility at an added cost of $25.7 billion (FY25–34), and the Clean Air Task Force estimates total 45Z spending of roughly $65 billion through 2034, mostly claimed by conventional biofuels including corn ethanol (CRS IF12502; Taxpayers for Common Sense, 2024–2025; Clean Air Task Force, 2025).
• Corn Belt landowners. The quiet beneficiary: higher corn prices capitalize into farmland values and cash rents. Recent reporting on new research frames biofuel policy's farmland-price inflation as a driver of rural wealth inequality (DTN Progressive Farmer, May 2026). Landowners — often not the operating farmers — captured much of the gain.

The proposal, concretely

• What changes: Congress amends Clean Air Act §211(o) (42 U.S.C. §7545(o)) to sunset the renewable-fuel volume obligations — cleanest form: phase the implied conventional volume from 15 billion gallons to zero over ~5 years, and repeal the RIN compliance apparatus at the end of the phase-out. (A purely administrative path exists — post-2022, EPA sets volumes by rule under the "set" authority and could ratchet conventional volumes down — but an EPA that near-zeroed corn ethanol would face years of litigation and instant reversal by the next administration. Statutory repeal is the honest ask.)
• What does not change: No ban on ethanol. Blenders may keep using ethanol as an octane source wherever it is the cheapest option — and the evidence (below) says they largely would, which is precisely why the mandate is unnecessary.
• Companion changes: End corn ethanol's eligibility for the §45Z credit (or let 45Z expire in 2029); redirect the savings and a portion of existing commodity support toward the compensation package.
• The compensation plank, concretely: Today's asymmetry is stark. Specialty crops (fruits, vegetables, nuts) get no direct income support; the Specialty Crop Block Grant Program was $85 million/year (2018–2025), raised to $100 million in FY2026, with the Specialty Crop Research Initiative going from $80M to $175M/year — a total federal specialty-crop package on the order of $275 million/year (USDA, April 2026; CRS R48625). Meanwhile ARC/PLC plus federal crop insurance average $12–14 billion/year, overwhelmingly to corn, soy, wheat, and cotton (AEI; corn alone drew $3.75B in ARC/PLC in 2016, and 2025 ARC/PLC payments are projected above $13.5B all-crop, farmdoc, Nov 2025). Fruits and vegetables are 22% of crop receipts but under 5% of crop insurance premiums; corn/soy/wheat/cotton are 58% of receipts but 87% of premiums (American Farm Bureau). The proposal: scale specialty-crop support (insurance products, block grants, research, market development) by an order of magnitude — from ~$0.3B to ~$3B/year — funded from 45Z savings, and offer corn-belt-specific transition payments (below), because — be honest — fruit subsidies in California do not compensate a corn farmer in Iowa.

Evidence

1. The climate dispute — presented straight. This is the central empirical fight and we should not pretend it is settled in our favor.

• Against corn ethanol: Lark et al., PNAS 2022 ("Environmental outcomes of the US Renewable Fuel Standard") combined econometrics, satellite land-use observation, and biophysical modeling for 2008–2016 and concluded the carbon intensity of RFS-era corn ethanol "is no less than gasoline and likely at least 24% higher," driven by domestic land-use-change emissions, plus +3–8% fertilizer use and +3–5% water-quality degradants. An accompanying PNAS commentary ("The sobering truth about corn ethanol," 2022) endorsed the concern.
• For corn ethanol: Argonne National Laboratory's GREET team (Taheripour et al., March 2022, and follow-ups) and USDA's Office of the Chief Economist (Dec 2022) published detailed critiques of Lark's land-use attribution and soil-carbon assumptions. The "state of the science" review most cited by the industry, Scully et al., Environmental Research Letters, 2021, puts current corn ethanol at roughly 46% lower carbon intensity than gasoline — note that study's funding came from Growth Energy (disclosed in the paper), just as Lark's critics note his coauthors' environmental-NGO funding. A formal exchange of comments and replies ran in PNAS through 2022 (Lark et al. reply).
• Our honest read: The dispute is methodological (attributing land-use change to the policy; soil carbon accounting) and unresolved. The defensible claim is not "ethanol is worse than gasoline"; it is "after nearly two decades and hundreds of billions of gallons, the flagship climate policy for gasoline cannot demonstrate a robust climate benefit, and its true value may be negative." That is sufficient for the plank: a mandate this large should carry the burden of proof.

2. What repeal would actually do to corn prices — the evidence cuts against catastrophe (and against euphoria). Bruce Babcock's Iowa State CARD modeling of a full RFS waiver found corn prices falling ~28 cents/bushel (under 5%) with ethanol production declining under 5%, because ethanol had become the cheapest octane source and much blending is market-driven (CARD 2012, via Brownfield; Ethanol Producer summary). Related RIN-cap modeling put the effect near 25 cents/bushel (Farm Progress). Caveat: these are short-run waiver scenarios during high-oil-price years; a permanent statutory repeal in a low-RIN, cheap-oil environment would bite harder over a decade. Contrast with Lark et al.'s finding that the RFS raised corn prices ~30% over 2008–2016 — the build-out effect was large; the marginal effect of removing the floor today is smaller, but the floor still matters most exactly when farmers need it most (demand slumps).

3. Fuel-market evidence. E10's 3–4% mpg penalty is settled DOE/EPA guidance (fueleconomy.gov, 2024–2026). RIN pass-through to wholesale fuel prices is complete and fast (Knittel, Meiselman & Stock, 2017). The MTBE history matters: after ~25 states banned the groundwater-contaminating oxygenate MTBE (phase-out effectively complete by 2006), ethanol became the default octane/oxygenate replacement (CRS RL32787); economists have shown MTBE bans acted as implicit ethanol mandates on their own (Journal of Environmental Economics and Management, 2014). This is two-sided: it means repeal probably leaves ~E10 blending largely intact (softening the blow to farmers), and it also means consumer savings from repeal are modest.

4. Food-price evidence. CBO (2009): 10–15% of the April 2007–April 2008 food-price rise; IFPRI and OECD (2008) attributed a significant share of the 2007–08 corn-price boom to biofuels; the Condon et al. meta-analysis (2015) gives the 3–4%-per-billion-gallons rule of thumb. Effects on retail US food prices are diluted (farm value is a small share of retail food cost); effects on global grain prices and food-insecure importers were the acute harm in 2008–2012.

Overall strength of evidence: moderate. Strong on land-use expansion, price mechanics, RIN pass-through, and the failure of cellulosic; genuinely contested on net climate impact; thin on precisely quantifying long-run repeal effects on farm income.

Who wins, who loses

Does the proposed compensation actually compensate? Mostly no, and we should say so. Shifting subsidies to fruits and vegetables helps different people in different states (specialty crops concentrate in CA, FL, WA, MI; corn in IA, IL, NE). Corn Belt land, equipment, agronomy, and labor supply do not convert to strawberries. Honest compensation for the actual losers requires: (a) keeping ARC/PLC and crop insurance intact for corn (they are countercyclical — they automatically pay more as corn prices fall); (b) time-limited transition payments tied to the phase-out, funded from 45Z savings; (c) optional buyouts/conservation enrollment (CRP-style) for marginal acres. The fruit-and-vegetable shift is good food policy (Americans under-consume produce; subsidies contradict dietary guidelines — Farm Action, 2022) but it is not, by itself, farmer compensation. The plank's second sentence should be understood — and eventually rewritten — as "compensate corn farmers directly during transition; grow the specialty-crop safety net for everyone else."

Fiscal impact

The uncomfortable truth for a platform whose core claim is fiscal: the RFS mandate itself is off-budget. Its costs land on consumers and resource allocation, not the Treasury. Repeal per se scores near $0. The honest fiscal accounting (back-of-envelope except where noted):

• Savings — 45Z: ending conventional-biofuel eligibility captures some large share of the ~$65.5B projected cost through 2034 (CATF 2025, building on JCT scores of $8.4B original + $25.7B from the 2025 extension). Call it order-of-$40–55B/decade if corn ethanol and adjacent conventional fuels are excluded; label: rough estimate on top of real JCT scores.
• Savings — administration: EPA RFS/RIN program administration and litigation; small (tens of millions/yr; estimate, weak evidence).
• New outlays — specialty-crop expansion: ~$3B/yr under our proposal vs. ~$0.3B today (USDA FY2026 baseline) → ~+$27B/decade.
• New outlays — countercyclical trigger: lower corn prices mechanically increase ARC/PLC payments (they pay when prices/revenue fall below references). A ~5% corn price decline against 2025-level program parameters plausibly adds low single-digit $B/yr for several years (estimate, weak evidence — this needs a real score).
• New outlays — transition payments: whatever Congress buys the phase-out with; politically, expect $5–15B over the window (pure guess; flag as such).

Net: roughly fiscally neutral to modestly positive over a decade, dominated by the 45Z decision. This plank's case is efficiency and land use, not deficit reduction. CBO has never scored full RFS repeal; commissioning that score is the first ask (see Open questions).

The opposition's best case

1. "Ethanol is the cheapest octane, and you'll re-run the MTBE disaster." (Refining economists; RFA.) Post-MTBE, ethanol is the workhorse octane booster; removing it wholesale would force refiners to more aromatics or alkylate, raising costs and possibly air toxics. Answer: We concede the octane point — and it is actually our argument: because ethanol wins on octane economics at ~10% blends, repeal does not remove ethanol from gasoline; it removes the requirement and the RIN apparatus. CARD's waiver modeling (2012) found production falls <5% without the mandate. No ban is proposed.
2. "Energy security: 16 billion gallons is about a million barrels a day we don't import." (Growth Energy; EPA's own 2026 press framing — "strengthen American energy security.") Answer: Directionally true in 2007; much weaker now. The US became a net petroleum exporter around 2020 (EIA). Domestically produced oil and domestically produced ethanol both count as "American energy"; a mandate is not needed to choose between them. Partial concession: in a severe oil-supply shock, an installed ethanol industry has option value.
3. "You will gut the rural Midwest." (Iowa's political establishment; then-Gov. Branstad's 2016 formulation against Cruz — ethanol and wind are "thousands of jobs in our state"; RFA's $53B GDP / 314k jobs figures.) Answer: Partly right, and we concede the concentration: Iowa's ~41 plants produce ~25% of US ethanol (Time, 2016), and losses would concentrate in specific counties. But the modeled near-term price impact is ~5% (CARD 2012), blending largely continues on octane economics, countercyclical farm programs automatically expand, and we pair repeal with funded transition. The industry's own job multipliers (5.6 indirect/induced jobs per direct job) should be treated with the skepticism industry-funded multipliers deserve.
4. "Corn ethanol cuts greenhouse gases ~40–50% versus gasoline." (Argonne GREET / Scully et al. 2021 / USDA.) Answer: This is the strongest scientific opposition and we concede it is unresolved: credentialed federal-lab scientists dispute Lark et al. But a flagship policy whose central benefit ranges from "-46%" to "+24%" depending on land-use assumptions has not met its burden of proof, and even the favorable estimates concede early-2000s ethanol was far worse and improvements are partly an artifact of modeling choices. Uncertainty this deep is an argument against mandating 15 billion gallons a year, not for it.
5. "It's politically impossible — Iowa votes first." Answer: Ted Cruz won the 2016 Iowa Republican caucus while openly opposing the RFS (Washington Post, 2016) — though 83% of caucus-goers still backed pro-RFS candidates (Time, 2016), so read it as "survivable," not "safe." Concession: as of 2026, momentum runs the other way — EPA just finalized record volumes and 45Z was expanded. This plank is a long game.

Talking points

• One line: Washington forces ethanol into your gas tank — worse mileage, pricier food, 30 million acres growing fuel instead of food — and after 20 years it can't even show a climate benefit.
• Thirty seconds: Since 2007, federal law has required refiners to blend 15 billion gallons of corn ethanol into gasoline every year. That's roughly 40% of the corn crop. Your car goes 3–4% fewer miles per gallon on it, and the mandate helped push corn prices up about 30% in its first decade. The advanced "cellulosic" fuels that justified the law never showed up — the corn mandate stayed. Repeal the mandate; ethanol can still compete as an octane booster on its own. And compensate farmers directly during the transition instead of pretending the mandate is farm policy.
• Two minutes: adds — the villains: POET, ADM, Valero, and the trade groups Growth Energy and RFA, which in 2025 outspent the oil lobby to expand blending, and which just won a tax credit stream (45Z) projected around $65 billion through 2034. The evidence: the best independent study (Lark et al., PNAS 2022) finds RFS-era corn ethanol's carbon intensity likely 24% worse than gasoline once land conversion is counted — federal-lab scientists dispute it, which itself is the point: two decades in, the policy can't prove its central claim. The honest cost: corn farmers and ethanol towns in Iowa, Nebraska, and Illinois lose real money — modeled at roughly a 5% corn-price hit near-term — so repeal comes with a funded phase-out: keep countercyclical farm programs, add transition payments from 45Z savings, and grow the fruit-and-vegetable safety net from $0.3B to $3B a year. What we won't claim: big federal deficit savings (the mandate is off-budget) or that Iowa cornfields will become orchards. This is about ending a forced market, not banning a fuel.

Open questions

1. Commission a CBO score of statutory RFS phase-out + 45Z conventional-fuel exclusion, including the countercyclical ARC/PLC feedback (our net-fiscal claim is the weakest number in this doc).
2. What is the long-run (10-year) corn demand effect of full repeal, as opposed to the short-run waiver scenarios CARD modeled in 2012? A modern GTAP/FAPRI run with current oil prices, E15 growth, and export conditions would change our loser-sizing.
3. Would blending really persist near E10 without the mandate in a sustained cheap-oil world? The MTBE/octane logic says yes; test against refiner octane-sourcing studies.
4. Resolve or bound the Lark-vs-GREET dispute for our own use: ask an independent land-use economist which attribution method they'd defend under oath. Our "burden of proof" framing survives either answer, but our "24% worse" citation might not.
5. Design the compensation package for people, not crops: does a transition payment tied to historical ethanol-driven basis (local corn price premium near plants) target the actual losers better than fruit/vegetable subsidies? Almost certainly yes — should the plank text be revised?
6. Interaction with E15/E85 politics (2024–2026): year-round E15 expansion and record 2026–2027 RVOs move the baseline against us each year; track whether 45Z implementation entrenches carbon-capture-equipped ethanol as "low-carbon" and hardens the coalition.

Sources

Primary (government/statute/data): - Clean Air Act §211(o), 42 U.S.C. §7545(o) — RFS statute; created by Energy Policy Act of 2005, expanded by EISA 2007. Overview: CRS R43325, "The Renewable Fuel Standard (RFS): An Overview" — primary. - DOE Alternative Fuels Data Center, RFS program summary and EISA summary — primary. - EPA, Final Renewable Fuel Standards for 2026 and 2027 (2026) and Federal Register rule, April 1, 2026 — primary. - EIA, biofuels capacity/production notes, 2023–2024; EIA RIN price notes, 2023–2026, record-high RINs, 2026; EIA FAQ on ethanol content/fuel economy — primary. - USDA ERS, Feed Grains Sector at a Glance (corn use for ethanol >40% of use, 2024) — primary. WASDE 5.45B bu figure via Ethanol Producer Magazine, 2024 — secondary reporting a primary number. - fueleconomy.gov (DOE/EPA), Ethanol — E10 3–4% mpg penalty — primary. - CBO, "The Impact of Ethanol Use on Food Prices and Greenhouse-Gas Emissions," April 2009 (10–15% of Apr-2007–Apr-2008 food price rise) — primary; summarized in CBS News, 2009. - USDA OCE, Review of Lark et al. (2022), Dec 14, 2022 — primary. - CRS IF12502, "The Section 45Z Clean Fuel Production Credit" — primary. - CRS R48625, "Specialty Crops: Selected Farm Bill Programs"; USDA specialty-crop funding announcement, April 13, 2026 — primary. - CRS RL32787, "MTBE in Gasoline: Clean Air and Drinking Water Issues" — primary. - OpenSecrets, POET LLC lobbying, 2024 ($2.71M) — primary (disclosure data).

Academic: - Lark et al., "Environmental outcomes of the US Renewable Fuel Standard," PNAS 2022 — primary (peer-reviewed); reply to critics, PNAS 2022; commentary "The sobering truth about corn ethanol," PNAS 2022. - Scully et al., "Carbon intensity of corn ethanol in the United States: state of the science," Environ. Res. Lett. 2021 — primary (peer-reviewed; Growth Energy-funded, disclosed). - Argonne GREET team responses to Lark et al., 2022 — primary (federal lab). - Knittel, Meiselman & Stock, "The Pass-Through of RIN Prices...," JAERE 2017 / NBER w21343 (2015) — primary (peer-reviewed). - Condon, Klemick & Wolverton, "Impacts of ethanol policy on corn prices: A review and meta-analysis," Food Policy 2015 (EPA working paper version) — primary (peer-reviewed). - Smith et al., "Major impacts of the US Renewable Fuel Standard on corn and soybean cultivation," JAAEA 2024 — primary (peer-reviewed). - Babcock (Iowa State CARD), RFS waiver analyses, 2012 — primary institution; accessed via Brownfield Ag News, 2012 and Ethanol Producer, 2012 — mark: primary study, secondary access; verify against CARD working paper 12-WP-530 before "reviewed" status. - "A ban on one is a boon for the other" (MTBE bans as implicit ethanol mandates), JEEM 2014 — primary (peer-reviewed).

Secondary (industry, advocacy, journalism — used with flags): - RFA economic-contribution analyses, 2024 and 2025 editions, 2026 release — industry-funded. - Clean Air Task Force on 45Z costs, 2025; Taxpayers for Common Sense 45Z fact sheet, 2024 — advocacy citing JCT. - Taxpayers for Common Sense, "Political Footprint of the Corn Ethanol Lobby," 2013 (updated) — advocacy; fetch blocked during this pass (unverified beyond search snippet — re-verify before "reviewed"). - NOTUS, "The Ethanol Lobby Vastly Outspent the Oil Lobby...," 2025 — journalism; fetch blocked during this pass (unverified beyond headline/snippet — re-verify before "reviewed"). - OpenSecrets News, ethanol lobby, 2011; Roll Call, 2018 — journalism on disclosure data. - American Farm Bureau, specialty-crop insurance shares and 2026–27 RVO analysis, 2026 — industry association. - AEI, "Where the Money Goes" (farm subsidy distribution) — think tank. - farmdoc daily (U. Illinois): RIN system overview, 2023; projected ARC/PLC payments, Nov 2025 — academic extension. - Statista, largest US ethanol producers by capacity, 2024; Farm Progress, five largest producers — secondary. - Washington Post on Cruz/Iowa 2016; Time, 2016 — journalism. - DTN Progressive Farmer, "Biofuel Policy's Hidden Cost: Rising Farmland Prices...," May 2026 — journalism on new research (underlying study not yet verified). - Farm Action, subsidies vs. dietary guidelines, 2022 — advocacy.