Sources: 
President Donald Trump has withdrawn the nomination of Jared Isaacman as NASA chief, citing concerns over Isaacman’s loyalty to the administration’s America First agenda.
Isaacman, a 42-year-old billionaire tech entrepreneur and private astronaut, is the founder and CEO of Shift4, a payment-processing company. He has commanded and funded two missions to Earth orbit, highlighting his significant involvement in private spaceflight.
A White House statement implied that Isaacman was not fully aligned with Trump’s space priorities, though it did not provide an explicit reason for the withdrawal. "
It's essential that the next leader of NASA is in complete alignment with President Trump’s America First agenda," the statement said, adding that a replacement would be announced soon.
During his nomination hearing before the Senate Committee on Commerce, Science, and Transportation in April, Isaacman faced questions from multiple Democratic senators regarding potential conflicts of interest related to his business ventures.
The decision to pull Isaacman’s nomination underscores the administration’s emphasis on loyalty and alignment with its policy goals in key federal appointments, particularly in the space agency.
“Jared Isaacman won't be NASA's next chief after all,” reported Semafor on May 31, marking a significant shift in the leadership direction for NASA under the Trump administration.
This development leaves the future leadership of NASA uncertain as the White House prepares to announce a new nominee who presumably aligns more closely with the President’s agenda.
Sources: 
President Donald Trump has withdrawn Jared Isaacman’s nomination as NASA chief, citing concerns over Isaacman’s loyalty to the administration’s America First agenda. Isaacman, a billionaire entrepreneur and private astronaut, had faced scrutiny from Democratic senators over potential conflicts of interest during his nomination process.