Congress extends diesel-pollution cleanup program five more years
S. 2235 — Diesel Emissions Reduction Act of 2025 · Filed by Sheldon Whitehouse (D-RI) · 5 cosponsors · Introduced Jul 10, 2025 · Reported out
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What it does
This bill extends the Diesel Emissions Reduction program, which funds projects to reduce pollution from diesel engines, by five years—from an expiration date of 2024 to 2029. The program provides grants and rebates to retrofit or replace older diesel vehicles and equipment with cleaner alternatives, benefiting air quality and public health.
Why we flagged it
The bill's sole operative function is to extend an existing air-quality and emissions-reduction program by five years. It is a routine reauthorization with no policy changes to the underlying program.
Who it affects
The bill extends a program that reduces air pollution from diesel engines, which harms public health—particularly in communities near highways, ports, and industrial areas. Continued funding supports cleaner air and lower respiratory disease burden.
Who stands to gain
- diesel retrofit and emissions-control equipment manufacturers
- fleet operators and vehicle owners eligible for rebates
Named in the bill
Energy Policy Act of 2005, Diesel Emissions Reduction program, Section 797(a), Senate Committee on Environment and Public Works
Where it stands
5 cosponsors: 3 Republicans, 2 Democrats.
- Jul 10, 2025 — Introduced · Congress.gov: “Introduced in Senate”
- Jul 10, 2025 — Referred to Senate Committee on Environment and Public Works · Congress.gov: “Read twice and referred to the Committee on Environment and Public Works”
- Oct 29, 2025 — Reported out of committee · Congress.gov: “Committee on Environment and Public Works. Reported by Senator Capito without amendment.”
Dates and quoted wording are Congress.gov's action record; the timeline shows status changes, not every procedural step.
Money around this bill
1 lobbying clients named this bill on 1 disclosure filings across 1 quarter, Jun 2026 to Jun 2026. Those filings disclosed $720,000 in lobbying spend. A filing names 164 bills on average, so that figure is what each filing reported, not a share belonging to this bill.
More lobbying clients named this bill than 0% of bills with at least one filing.
Sheldon Whitehouse, the sponsor, reported $52,000 in PAC receipts in the 2026 cycle.
- American Trucking Associations — $720,000 on 1 filing
Lobbying Disclosure Act filings through Jul 20, 2026. A filing shows who paid to lobby on a bill it names, not what changed.
How this was measured
Analysis — Quorum's AI read the bill text published by Congress.gov (275 characters) on Jul 6, 2026. Section numbers in the findings refer to that text, linked below; transparency and hidden-provision scores are compared against the median of 16,222 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 2026-10-20.
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