Originally nominated by Trump in December 2024 to serve as NASA’s administrator, Isaacman won the Senate Committee on Commerce, Science and Transportation’s approval in April. He was days away from a confirmation vote by the full Senate when the president changed course.

U.S. President Donald Trump said on Tuesday he was re-nominating Jared Isaacman, the private astronaut and ally of fellow billionaire and SpaceX founder Elon Musk, for the post of NASA administrator, ...