Senate and White House clash over truck emissions regulation.

The Senate voted to revoke a Biden administration emissions regulation for heavy-duty trucks, with Republicans arguing that the existing standards are already stringent and the new approach will hurt the trucking industry and have negative ripple effects through the economy. The final rule, adopted by the Environmental Protection Agency in December, sets new emission standards that are significantly more stringent and cover a wider range of heavy-duty engine operating conditions compared to today's standards. The Republican-led House is expected to pass the measure as well, although it's unlikely either chamber would be able to override an expected veto by President Joe Biden.