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

Sean Duffy was confirmed Tuesday as transportation secretary, giving him a key role in helping President Donald Trump cut regulations and fix the nation's infrastructure.

Sean Duffy, Trump's pick to lead the Department of Transportation, will support NHTSA's safety probes into Tesla's vehicles.

Sean Duffy, the new transportation secretary, is facing his first major crisis just hours after his swearing-in.

In October, NHTSA launched a probe Tesla's self-driving ... Former Wisconsin congressman Sean Duffy said at his Senate confirmation hearing that he would “restore global confidence" in Boeing ...