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

He has publicly questioned climate change. The NHTSA chief would have to initiate a full rule-making process to set looser standards, which took two years during the first Trump administration.

President Trump’s tariffs could threaten supply chains in the renewable energy industry and disrupt oil and gas markets.

He has publicly questioned climate change. The NHTSA chief would have to initiate a full rule-making process to set looser standards, which took two years during the first Trump administration.