The U.S. Department of Transportation is investigating three blue states’ possible involvement in an Aug. 12 fatal car crash ...

The Transportation secretary says the effort is about safety, but some rail experts and the wind industry say there's little ...

Transportation Secretary Sean Duffy detailed his spat with Elon Musk over firing air traffic controllers during an appearance ...

Transportation Secretary Sean Duffy opened up about his past dispute with tech mogul Elon Musk over the guru’s push to slash ...

Transportation Secretary Sean Duffy accused his predecessor of lowering the testing standards to become an air traffic ...

Sean Duffy, acting administrator of NASA, speaks with CBS News' Mark Strassmann about the new space race with China.

U.S. Transportation Secretary and acting NASA Administrator Sean Duffy joined President Donald J. Trump in signing of the Executive Order.

DOT officials launched a new million-dollar idea challenge targeted at the future of American transportation and ...

Acting NASA administrator Sean Duffy told Fox News host Jimmy Failla he had not yet been given "the alien briefing," despite ...

U.S. Transportation Secretary Sean Duffy was the latest in a string of Trump cabinet members to visit Alaska this month.

Transportation Secretary Sean Duffy stated there are no current plans to privatize the FAA or air traffic controllers, ...

Transportation Secretary Sean Duffy on Wednesday said he is not looking to privatize the Federal Aviation Administration (FAA ...