"The Trump administration announced on Thursday that it is proposing to loosen requirements for pollution controls that rein in emissions from heavy duty trucks."
"The administration said the technical changes are expected to allow for more flexibility for truck companies, when compared to a Biden-era rule.
The move is also expected to undermine some of the Biden rule’s pollution protections.
In particular, the Trump administration is proposing to shorten the amount of time that engine manufacturers have to guarantee that pollution controls will work.
The Biden administration extended this warranty from 100,000 miles to 450,000 miles. The Trump administration is revising it back down to 100,000 miles. "
Source: The Hill, 07/10/2026
