Secretary of Transportation Sean Duffy immediately moved to roll back fuel efficiency standards moments after being sworn in ...

Secretary of Transportation Sean Duffy immediately moved to roll back ... California, along with 17 other states, sets stricter air pollution regulations then the federal government.

Hours after being sworn in as the new U.S. Secretary of Transportation, Sean Duffy took aim at the main way the federal ...

Sean Duffy took aim at the main way the federal government regulates miles per gallon for cars and pickup trucks — also a principal way that it regulates air pollution and addresses climate change.

Sean Duffy took aim at the main way the federal government regulates miles per gallon for cars and pickup trucks — also a principal way that it regulates air pollution and addresses climate change.