Congress moves to strip EPA power to enforce vehicle emissions rules
H.R. 8079 — Diesel Truck Liberation Act of 2026 · Filed by Mike Collins (R-GA) · 8 cosponsors · Introduced Mar 25, 2026 · Referred to committee
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What it does
This bill prohibits the EPA and all federal agencies from requiring manufacturers to install or maintain emissions control devices on motor vehicles, voids all existing emissions-control regulations, shields manufacturers and vehicle owners from liability for selling or using vehicles without these devices, and expunges records of past criminal convictions and civil penalties for emissions violations.
Why we flagged it
The bill's operative mechanism is a blanket prohibition on EPA enforcement of emissions-control mandates under the Clean Air Act, coupled with liability shields for non-compliance. This is functional deregulation of vehicle emissions, not a narrow technical fix.
What the text implies
- Expungement of past criminal convictions for emissions violations (section e) may allow individuals previously convicted of 'rolling coal' or defeat-device installation to clear their records, reducing deterrent effect of prior enforcement.
- Prohibition on 'onboard diagnostic systems' (OBD) removes real-time emissions monitoring, eliminating a key tool for detecting non-compliance and vehicle tampering after sale.
The full analysis lists 5 implications of this text.
Who stands to gain
diesel engine manufacturers; heavy-duty truck manufacturers; aftermarket emissions-defeat device suppliers