U.S. President Donald Trump listens during an event commemorating the 50th anniversary of the Apollo 11 moon landing in the Oval Office of the White House in Washington, D.C., U.S., on Friday, July 19, 2019. Trump welcomed former Apollo 11 astronauts to celebrate the 50th anniversary of the moon landing, as his administration continues to wrestle with the next step in U.S. space exploration. Photographer: Andrew Harrer/Bloomberg via Getty Images
