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H.R. 2140119th CongressEnvironmental Protection
Diesel Emissions Reduction Act of 2025
Sponsored by Rep. Doris O. Matsui (D-CA) · 3 active : 2 Republicans, 1 Democrat
Latest action: Received in the Senate. Read twice. Placed on Senate Legislative Calendar under General Orders. Calendar No. 624.
Where it standsPassed House, now in the Senate9 senators score as swing votes
Passed House
- House: passedSep 15, 2026
- Senate: next
- President: not yet
Summary
, via Congress.govDiesel 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.
How the projections held up
Each member’s recorded vote compared with their swing projection from before the vote. A member by voting against most of their own party.
House
On Motion to Suspend the Rules and PassPassed343 yea, 79 naySeptember 15, 2026 · Roll call 304
| BandBand before the vote | VotedVoted yea or nay | BrokeBroke with party | Share |
|---|---|---|---|
| Swing | 50 | 1 | 2% |
| Middle | 209 | 27 | 13% |
| Entrenched | 161 | 51 | 32% |
Committees and subjects
Committees
- House Committee on Energy and Commerce · HouseReported by · Referred to
- Environment · HouseReported by · Markup by · Referred to
Subjects
- Air quality
- Climate change and greenhouse gases
- Motor fuels
- Motor vehicles
How the Senate breaks down
- 9Swing 70–100
- 62Middle 30–70
- 29Entrenched 0–30
Members fall into . All 100 senators have enough data to score.
Key players in the Senate
Ranked by swing score, 0–100 · swing-v2, directional: only movement toward the other party counts, so members who sit further from the center than their party no longer score as swing votes.
Bars show each input from 0 to 100: ideology gap, scorecard gap, . is the seat’s partisan lean, and shows how much of the input data a score has.
Similar past votes, Senate
Earlier behind swing-v3’s inputLoading similar votes
Cosponsors
3 activeShow all 3 cosponsors
- Chellie Pingree (D-ME-1)
- Ken Calvert (R-CA-41)
- Nicholas A. Langworthy (R-NY-23)
How the swing score works
Ideology gapHow far a member’s DW-NOMINATE voting score sits from their party’s median in the same chamber.
Scorecard gapHow far their Heritage Action and LCV ratings stray from their party’s average, using the groups’ votes on similar bills where available.
Cross-pressureHow strongly their district or state leans toward the other party, from our own computed partisan lean.
Similar votesHow often they voted against their own party on earlier roll calls about this bill or similar ones.
Committee bonusMembers of the committees handling the bill decide whether it moves, so they get a boost.
Cosponsor checkThe sponsor and active cosponsors have already committed, so they drop toward entrenched.
