Transportation Secretary Sean Duffy warned the Mexican government Saturday that the US reserves the right to deny flight requests after its southern neighbor removed some flight slots for American ...

President Donald Trump said on Wednesday he is directing Transportation Secretary Sean Duffy to be the interim NASA administrator. “Sean is doing a TREMENDOUS job in handling our Country’s ...

President Donald Trump has appointed Sean Duffy, the secretary of Transportation, to a dual role as interim leader of NASA. The move comes amid a chaotic time for the space agency.