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Environmental Protection: how Congress voted

21 contested final votes on environmental protection bills in the 119th Congress, with party breakdowns.

Last voteBillBy party
Sept. 16, 2026H.J.Res. 213 Providing for congressional disapproval under chapter 8 of title 5, United States Code, of the rule issued…
This joint resolution revokes the partial authorization granted to the California Air Resources Board (CARB) to amend its Commercial Harbor Craft regulation.
House: Democrats 3–207, Independents 1–0, Republicans 210–1
Sept. 15, 2026H.R. 2140 Diesel Emissions Reduction Act of 2025
This bill reauthorizes through FY2029 a diesel emissions reduction program under which the Environmental Protection Agency provides grants, rebates, or loans for replacing diesel engines or retrofitting the engines with pollution control technologies.
House: Democrats 212–0, Independents 1–0, Republicans 130–79
Sept. 15, 2026H.J.Res. 210 Overturn the Environmental Protection Agency rule “California State Nonroad Engine Pollution Control Standards; Ocean-Going Vessels…”
This joint resolution revokes the authorization granted to the California Air Resources Board (CARB) to amend its Ocean-Going Vessels At-Berth Regulation.
House: Democrats 3–210, Independents 1–0, Republicans 212–1
Sept. 14, 2026H.R. 3276 Local Communities & Bird Habitat Stewardship Act of 2026
This bill provides statutory authority for the Urban Bird Treaty Program, which is administered by the U.S. Fish and Wildlife Service.
House: Democrats 206–0, Independents 1–0, Republicans 138–60
June 3, 2026H.R. 2860 Northwest Straits Marine Conservation Initiative Reauthorization Act of 2025
This bill revises and reauthorizes for seven years the Northwest Straits Marine Conservation Initiative and its Northwest Straits Advisory Commission.
House: Democrats 211–0, Independents 1–0, Republicans 162–49
May 13, 2026H.R. 1346 Nationwide Consumer and Fuel Retailer Choice Act of 2025
This bill amends the Clean Air Act to address the limitations on Reid Vapor Pressure (a measure of gasoline's volatility) that are placed on gasoline during the summer ozone season.
House: Democrats 95–113, Independents 1–0, Republicans 122–90
April 22, 2026H.R. 6387 Fire Improvement and Reforming Exceptional Events Act
This bill modifies the definition of exceptional events under the Clean Air Act and requires the Environmental Protection Agency (EPA) to revise its regulations regarding exceptional events or actions to mitigate wildfire risk.
House: Democrats 8–197, Independents 1–0, Republicans 211–1
April 16, 2026H.R. 6409 Foreign Emissions and Nonattainment Clarification for Economic Stability Act
This bill modifies standards under the Clean Air Act to exempt states from penalties for emissions outside of the state’s control.
House: Democrats 6–207, Independents 1–0, Republicans 213–1
April 16, 2026H.R. 6398 Reducing and Eliminating Duplicative Environmental Regulations Act
This bill removes the requirement under the Clean Air Act that the Environmental Protection Agency (EPA) review and comment on newly authorized federal construction projects and other major federal agency actions that already require review under the National Environmental Policy Act (NEPA) and proposed federal regulations.
House: Democrats 7–204, Independents 1–0, Republicans 214–1
Dec. 18, 2025H.R. 4776 Standardizing Permitting and Expediting Economic Development Act
This bill limits the scope of the National Environmental Policy Act of 1969 (NEPA) and modifies the environmental review of major federal actions under NEPA to generally limit the number of federal actions that trigger NEPA review and to expedite the review process.
House: Democrats 11–195, Republicans 210–1
Dec. 18, 2025H.R. 1366 Mining Regulatory Clarity Act
This bill allows mining operators to use federal lands for activities ancillary to mining, such as waste disposal, regardless of whether those lands contain mineral deposits valuable enough to be mined (mineral validity).
House: Democrats 9–197, Republicans 210–1
Dec. 18, 2025H.R. 845 Pet and Livestock Protection Act
This bill directs the Department of the Interior to remove protections for the gray wolf under the Endangered Species Act of 1973 (ESA).
House: Democrats 5–200, Republicans 206–4
Dec. 11, 2025H.R. 3898 Promoting Efficient Review for Modern Infrastructure Today Act
This bill limits the scope of the Clean Water Act by redefining navigable waters to exclude (1) waste treatment systems, (2) ephemeral features that flow only in direct response to precipitation, (3) prior converted cropland, (4) groundwater, or (5) any other features determined to be excluded by the U.S. Army Corps of Engineers.
House: Democrats 6–204, Republicans 215–1
July 22, 2025H.R. 1917 Great Lakes Mass Marking Program Act of 2025
This bill provides statutory authority for a program of the U.S. Fish and Wildlife Service (FWS) for the mass marking of hatchery-produced fish in the Great Lakes basin.
House: Democrats 207–0, Republicans 153–57
May 22, 2025H.J.Res. 87 Overturn the Environmental Protection Agency rule “California State Motor Vehicle and Engine Pollution Control Standards; Heavy-Duty…”
This joint resolution revokes waivers granted to the California Air Resources Board regarding several of its regulations, including the Heavy-Duty Vehicle and Engine Emission Warranty Regulations and Maintenance Provisions.
House: Democrats 13–190, Republicans 218–1
Senate: Democrats 0–43, Independents 0–2, Republicans 51–0
May 22, 2025H.J.Res. 89 Overturn the Environmental Protection Agency rule “California State Motor Vehicle and Engine and Nonroad Engine Pollution Control…”
This joint resolution revokes the waiver granted to the California Air Resources Board regarding new emissions standards for new 2024 and subsequent model year on-road heavy-duty vehicles and engines, off-road diesel engines, and off-road diesel-fueled auxiliary power units.
House: Democrats 10–195, Republicans 215–1
Senate: Democrats 0–44, Independents 0–2, Republicans 49–0
May 22, 2025H.J.Res. 88 Overturn the Environmental Protection Agency rule “California State Motor Vehicle and Engine Pollution Control Standards; Advanced Clean…”
This joint resolution revokes the waiver granted to the California Air Resources Board regarding its Advanced Clean Cars II (ACC II) regulations, which include new requirements for low-emission vehicles and zero-emission vehicles.
House: Democrats 35–164, Republicans 211–0
Senate: Democrats 1–42, Independents 0–2, Republicans 50–0
May 22, 2025S.J.Res. 31 Overturn the Environmental Protection Agency rule “Review of Final Rule Reclassification of Major Sources as Area Sources Under Section…”
This joint resolution removes the requirements for sources of persistent and bioaccumulative hazardous air pollutants to comply with certain major source emissions standards when those sources reclassify as area sources (which have less stringent standards).
House: Democrats 0–211, Republicans 216–1
Senate: Democrats 0–44, Independents 0–2, Republicans 52–0
May 6, 2025H.J.Res. 61 Overturn the Environmental Protection Agency rule “National Emission Standards for Hazardous Air Pollutants: Rubber Tire Manufacturing”
This joint resolution removes emission regulations on hazardous air pollutants under the rubber tire manufacturing source category, specifically from the rubber processing subcategory.
House: Democrats 7–201, Republicans 209–1
Senate: Democrats 2–43, Independents 0–2, Republicans 53–0
Feb. 27, 2025H.J.Res. 35 Overturn the Environmental Protection Agency rule “Waste Emissions Charge for Petroleum and Natural Gas Systems: Procedures for…”
This joint resolution eliminates an annual waste emissions charge on oil or gas facilities under the Methane Emissions Reduction Program.
House: Democrats 6–205, Republicans 214–1
Senate: Democrats 0–45, Independents 0–2, Republicans 52–0
Jan. 23, 2025H.R. 375 Continued Rapid Ohia Death Response Act of 2025
This bill establishes requirements to research and control Rapid Ohia Death, which is the disease caused by the fungal pathogen known as Ceratocystis fimbriata that affects the tree of the species Metrosideros polymorpha.
House: Democrats 206–0, Republicans 153–62

Policy areas are assigned by the Congressional Research Service. Source: GovInfo BILLSTATUS and Voteview.