H.R. 2140 (119th)Bill Overview

Diesel Emissions Reduction Act of 2025

Environmental Protection|Air qualityClimate change and greenhouse gases
Cosponsors
Support
Bipartisan
Introduced
Mar 14, 2025
Discussions
Bill Text
Current stageCommittee

Referred to the House Committee on Energy and Commerce.

Introduced
Committee
Floor
President
Law
Congressional Activities
01 · The brief
Plain-English summaryWhat this bill actually does

This bill amends Section 797(a) of the Energy Policy Act of 2005 by changing the statutory authorization end year for the Diesel Emissions Reduction Program (DERA) from 2024 to 2029. It is a date-change reauthorization; it does not itself appropriate new funds or alter program mechanics in the text provided.

Why people may split

Progressives emphasize public health and environmental justice benefits

Watch point

Relative to its intended legislative type, this bill is a narrowly focused procedural/housekeeping amendment that explicitly changes the statutory authorization year for the diesel emissions reduction program from 2024 to 2029.

This bill amends Section 797(a) of the Energy Policy Act of 2005 by changing the statutory authorization end year for the Diesel Emissions Reduction Program (DERA) from 2024 to 2029.

It is a date-change reauthorization; it does not itself appropriate new funds or alter program mechanics in the text provided.

Passage80/100

Simple, non-controversial reauthorization historically easy to enact, though requires appropriations and scheduling.

CredibilityAligned

Relative to its intended legislative type, this bill is a narrowly focused procedural/housekeeping amendment that explicitly changes the statutory authorization year for the diesel emissions reduction program from 2024 to 2029. The statutory change is precisely targeted and clearly drafted.

Contention35/100

Progressives emphasize public health and environmental justice benefits

02 · What it does

Who stands to gain, and who may push back.

Likely benefits vs burdens50% / 50%
Federal agenciesFederal agencies

These are examples from the analysis, not a ranked list of the most-affected groups.

Likely helped
  • Federal agenciesContinues federal authorization for grants and rebates that fund diesel engine retrofits and replacements.
  • Potential benefitHelps sustain programs that reduce diesel pollution, improving respiratory health in affected communities.
  • Potential benefitSustains demand for retrofit, replacement, and maintenance jobs in transportation and equipment sectors.
Likely burdened
  • Potential burdenExtending authorization does not guarantee continued or increased appropriations for the program.
  • Potential burdenMaintaining the program may continue application, compliance, and reporting burdens for recipients.
  • Federal agenciesIf funded, the program requires federal appropriations, representing an opportunity cost in budgets.
03 · Why people split

Why the argument around this bill splits.

Progressives emphasize public health and environmental justice benefits
Progressive90%

Supportive.

Extending DERA aligns with public health and environmental justice goals by keeping a federal tool available to reduce diesel pollution.

They will welcome continued federal backing for engine retrofits and replacements that benefit frontline communities.

Leans supportive
Centrist80%

Generally supportive but pragmatic.

They view a straightforward reauthorization as reasonable to preserve a bipartisan tool, while wanting fiscal transparency, oversight, and measurable outcomes.

They will look for cost-effectiveness and accountability provisions in committee work.

Leans supportive
Conservative50%

Cautiously skeptical.

Some will see a simple extension as low-risk, but many will question continuing federal programs without clear offsets, prefer state control, and resist open-ended federal spending.

Support depends on assurances of no mandate or new spending.

Split reaction
04 · Can it pass?

The path through Congress.

Introduced

Reached or meaningfully advanced

Committee

Reached or meaningfully advanced

Floor

Still ahead

President

Still ahead

Law

Still ahead

Passage likelihood80/100

Simple, non-controversial reauthorization historically easy to enact, though requires appropriations and scheduling.

Scope and complexity
24%
Scopenarrow
24%
Complexitylow
Why this could stall
  • No CBO cost estimate provided
  • Whether appropriations will match authorization
05 · Recent votes

Recent votes on the bill.

No vote history yet

The bill has not accumulated any surfaced votes yet.

06 · Go deeper

Go deeper than the headline read.

Included on this page

Progressives emphasize public health and environmental justice benefits

Simple, non-controversial reauthorization historically easy to enact, though requires appropriations and scheduling.

Unlocked analysis

Relative to its intended legislative type, this bill is a narrowly focused procedural/housekeeping amendment that explicitly changes the statutory authorization year for the diesel emissions reduction program from 2024…

Go beyond the headline summary with full stakeholder mapping, legislative design analysis, passage barriers, and lens-by-lens tradeoff breakdowns.

Perspective breakdownsPassage barriersLegislative design reviewStakeholder impact map
Open full analysis