Congress is out of session until Monday, November 9 for the midterm campaign. No new roll-call votes until then; the last were the House on Sep 16 and the Senate on Sep 30.

People / Brian J. Mast / Questions / Environmental Protection

How did Brian J. Mast vote on Environmental Protection?

Brian J. Mast voted Yea on 24 and Nay on 8 of the 33 Environmental Protection roll calls in the House in the 119th Congress, and did not vote on 1, as of Nov 1, 2026.

On the 25 of those where most Democrats and most Republicans voted on opposite sides, he voted with Republicans 100% of the time (median for House Republicans: 100%).

Environmental Protection votes
Yea24
Nay8
Did not vote1
Environmental Protection roll calls in the House33
With Republicans on party-line votes25 of 25 (100%)
House Republicans, median100%

Source: Voteview roll calls (UCLA) · policy area of each bill from congress.gov · How we measure · Updated Nov 1, 2026

The 10 most recent of 33 Environmental Protection votes

DateMeasureTitleVote Party split (yea)Result
Sep 16, 2026 H.J.Res. 213 Providing for congressional disapproval under chapter 8 of title 5, United States Code, of the rule issued by the Environmental Protection Agency relating to the "California State Nonroad Engine Pollution Control Standards; Commercial Harbor Craft Regulations; Notice of Decision".On Passage · This joint resolution revokes the partial authorization granted to the California Air Resources Board (CARB) to amend its Commercial Harbor… Yea Passed
214–208
Sep 15, 2026 H.J.Res. 210 Providing for congressional disapproval under chapter 8 of title 5, United States Code, of the rule submitted by the Environmental Protection Agency relating to "California State Nonroad Engine Pollution Control Standards; Ocean-Going Vessels At-Berth; Notice of Decision".On Passage · This joint resolution revokes the authorization granted to the California Air Resources Board (CARB) to amend its Ocean-Going Vessels… Yea Passed
216–211
Sep 15, 2026 H.R. 2140 Diesel Emissions Reduction Act of 2025On Motion to Suspend the Rules and Pass · This bill reauthorizes through FY2029 a diesel emissions reduction program under which the Environmental Protection Agency provides grants,… Yea Passed
343–79
Sep 14, 2026 H.R. 3276 Local Communities & Bird Habitat Stewardship Act of 2026On Motion to Suspend the Rules and Pass, as Amended · This bill provides statutory authority for the Urban Bird Treaty Program, which is administered by the U.S. Fish and Wildlife Service. Yea Passed
345–60
Jun 3, 2026 H.R. 2860 Northwest Straits Marine Conservation Initiative Reauthorization Act of 2025On Motion to Suspend the Rules and Pass, as Amended · This bill revises and reauthorizes for seven years the Northwest Straits Marine Conservation Initiative and its Northwest Straits Advisory… Yea Passed
374–49
May 13, 2026 H.R. 1346 To amend the Clean Air Act with respect to the ethanol waiver for Reid Vapor Pressure under that Act, and for other purposes.On Passage · Nationwide Consumer and Fuel Retailer Choice Act of 2025 Yea Passed
218–203
May 13, 2026 H.R. 1346 To amend the Clean Air Act with respect to the ethanol waiver for Reid Vapor Pressure under that Act, and for other purposes.On Motion to Recommit · Nationwide Consumer and Fuel Retailer Choice Act of 2025 Nay Failed
112–309
Apr 22, 2026 H.R. 6387 FIRE ActOn Passage · Fire Improvement and Reforming Exceptional Events Act or the FIRE Act Yea Passed
220–198
Apr 22, 2026 H.R. 6387 FIRE ActOn Motion to Recommit · Fire Improvement and Reforming Exceptional Events Act or the FIRE Act Nay Failed
206–214
Apr 16, 2026 H.R. 6398 RED Tape ActOn Passage · Reducing and Eliminating Duplicative Environmental Regulations Act or the RED Tape Act Yea Passed
222–205

All 33 are in the full voting record, part of Pro.