The Department of Transportation has warned that airline traffic could "slow down" or "stop" amid the government shutdown, as ...

The transportation secretary's visit comes as air traffic controllers are slated to miss their first full paycheck next week.

Transportation Secretary Sean Duffy said Sunday that air traffic controllers “are wearing thin” amid the ongoing government ...

Transportation Secretary Sean Duffy warned he would withhold federal highway funds from California after a deadly crash ...

Elon Musk is taking aim at the head of NASA amid news that the U.S. space agency may consider companies other than SpaceX to ...

Starship was NASA's vehicle of choice to land astronauts on the moon before NASA head Sean Duffy's latest move. Now, Musk is ...

Sean Duffy, the Secretary of Transportation and acting administrator of NASA, appeared on CNBC on Monday to say that SpaceX ...

A close ally of Donald Trump, whose entreaties to the president to select a friend of his as the transportation secretary ...

A spat over the future of NASA under the Trump administration went public on Tuesday, with Elon Musk panning Transportation ...

Acting NASA chief Sean Duffy and billionaire Elon Musk on Tuesday traded barbs online over who should lead the space agency, ...

Transportation Secretary Sean Duffy accused California Governor Gavin Newsom (D) of trying to "pass the buck" after a deadly crash in his state.

Musk’s comments come one day after Duffy said he was in the process of reopening solicitations for a contract that had been ...