On Wednesday, the House passed a bill – introduced by Rep. Pete Olsen (R-TX) – allowing states to delay implementation of the EPA's ozone rule issued in October of 2015. The measure also extends the time frame for mandatory reviews of air quality standards from five to 10 years.
The vote came largely along party lines – passing by a 234 to 177 margin with only seven House Democrats joining Republicans in advancing the bill.
The White House issued a veto threat for the measure on Tuesday, saying the bill would undermine Clean Air Act protections and delay future reviews for other air pollutants.