Congress extends diesel pollution cleanup program to 2029
H.R. 2140 — Diesel Emissions Reduction Act of 2025 · Filed by Doris Matsui (D-CA) · 3 cosponsors · Introduced Mar 14, 2025 · Passed chamber
Your members of Congress
Enter a ZIP to see where your representative and both senators stood on this bill.
Looked up on this device — your ZIP is never stored on our servers.
What it does
This bill extends the Diesel Emissions Reduction Program for five more years. It will now run until 2029 instead of ending in 2024. The program gives money to fix or replace old diesel engines. These engines are used in trucks, farms, and factories. The money helps reduce air pollution.
Who it affects
People who live near ports, trucking routes, and farms breathe cleaner air. States and cities that use the program's money keep getting it. Companies that fix or replace diesel equipment may get more business.
One thing to notice
The program was set to end in 2024. This bill extends it five more years to 2029.
From the analysis of the bill text, linked under Primary records below.
Where it stands
3 cosponsors: 2 Republicans, 1 Democrats.
- Mar 14, 2025 — Introduced · Congress.gov: “Introduced in House”
- Mar 14, 2025 — Referred to House Committee on Energy and Commerce · Congress.gov: “Referred to the House Committee on Energy and Commerce”
- Jul 14, 2026 — Markup held in committee · Congress.gov: “Subcommittee Consideration and Mark-up Session Held”
- Sep 14, 2026 — Reported out of committee · Congress.gov: “Placed on the Union Calendar, Calendar No. 718”
- Sep 15, 2026 — Passed the House · Congress.gov: “On motion to suspend the rules and pass the bill Agreed to by the Yeas and Nays: (2/3 required): 343 - 79…”
- Sep 15, 2026 — Floor vote scheduled · Congress.gov: “Mr. Guthrie moved to suspend the rules and pass the bill”
Dates and quoted wording are Congress.gov's action record; the timeline shows status changes, not every procedural step.
Money around this bill
3 groups reported lobbying about this bill. They filed 3 reports from Jun 2026 to Jun 2026.
Those reports show $1,962,000 in lobbying spending. Each report lists about 78 bills. So that money was not all for this bill.
More groups named this bill than 61% of bills with any report.
Doris Matsui, who sponsored the bill, received $1,059,188 from PACs for the 2026 election.
- Caterpillar Inc — $1,142,000 in 1 report
- American Trucking Associations — $720,000 in 1 report
- Sierra Club — $100,000 in 1 report
Lobbying is legal. These reports show who lobbied about this bill, not what changed.
Words to know
- Diesel Emissions Reduction Program — A federal program that gives money to reduce pollution from diesel engines.
- emissions — Pollution that comes out of engines and machines.
- lobbying — Trying to influence lawmakers about a bill. Companies and groups pay people to do this.
- PACs — Groups that collect money and give it to candidates for office.
- sponsored — To sponsor a bill is to introduce it in Congress and put your name on it.
How this was measured
Analysis — Quorum's AI read the bill text published by Congress.gov (380 characters) on Jul 18, 2026. Section numbers in the findings refer to that text, linked below; transparency and hidden-provision scores are compared against the median of 16,778 analysed bills.
Status and sponsors — Congress.gov's bill record — actions, committee referrals and cosponsors — loaded nightly. The timeline shows status changes, not every procedural action.
Money — Senate Lobbying Disclosure Act filings whose specific-issue field names this bill for quarters ending Jun 2026 to Jun 2026. A filing's amount is reported whole beside the median number of bills a filing names; it is never divided across them. PAC receipts are FEC-reported contributions to the sponsor's candidate committee in the 2026 cycle.
As of — lobbying records through Jul 20, 2026 · page rendered 2026-11-01.
“Congress extends diesel pollution cleanup program to 2029” QuorumCivic. https://share.quorumcivic.app/bill/119/hr2140/simple Report an error
The week in bills
One email, Sunday: what Congress passed, what it changed, and who paid.
One link arrives to confirm the address. It is used for this email and nothing else, and every issue carries an unsubscribe link.