Donald Trump badly wanted to be the president who sent Americans back to the moon.

Instead, his administration has presided over Artemis, a lunar-landing program plagued by "uncertain plans, unproven cost assumptions, and limited oversight,” according to a new watchdog report. Pieces of the program, including the SLS rocket and Orion spacecraft, are billions of dollars over budget, years past deadline and poised to eat into NASA’s more promising projects.

As a result, the U.S. space agency will almost certainly miss its goal of landing Americans on the moon again by 2024.