President Joe Biden vetoed Republicans' efforts to roll back an Environmental Protection Agency standard related to vehicle pollution.

Biden announced his veto on Twitter on Wednesday.

"Earlier, I vetoed a Republican resolution to repeal an EPA standard that will make our air cleaner and prevent thousands of premature deaths by limiting hazardous heavy-duty vehicle pollution. This would take us backwards in our fight against air pollution, so I'm blocking it," Biden said.

This is a breaking story and will be updated.