Chief of Staff Susie Wiles could make or break Trump's second term. NPR's Ailsa Chang speaks with Chris Whipple, author of The Gatekeepers: How the White House Chiefs of Staff Define Every Presidency.

Susie Wiles, who was named Donald Trump’s new White House chief of staff, would become the first woman to ever hold the prominent role as the president's closest adviser and counsel.

Defense Secretary Pete Hegseth has ordered an investigation into retired general Mark Milley — who often clashed with President Trump — and determine whether he should be reduced in rank.

The Pentagon removed a portrait of retired Gen. Mark Milley that hung with paintings of other former chairs of the Joint Chiefs of Staff, just hours after President Donald Trump was sworn in on Monday, The New York Times reported. A U.S. official told the newspaper that the White House ordered the takedown.

Esper (C), Chairman of the Joint Chiefs of Staff Mark A. Milley (R), and others from the White House to visit St. John's Church after the area was cleared of people protesting the George Floyd's death. "My presence in that moment and in that environment ...

They include celebrity chef José Andrés and the commandant of the US Coast Guard Adm Linda Fagan, as well as retired US army general Mark Milley who had served on the National Infrastructure Advisory Council.

Defense Secretary Pete Hegseth removed the security detail for former Joint Chiefs Chairman Mark Milley. He had security as a former chairman and for his involvement in a 2020 drone strike that killed a top Iranian general.

The former Joint Chiefs chairman had warned that Trump may seek revenge against him and other critics if re-elected to the White House.

Defense Secretary Pete Hegseth is pulling the security protections and clearance of retired Joint Chiefs chairman Gen. Mark Milley

The Defense Department intelligence agency has paused observances of Martin Luther King Jr. Day, Pride Month, Holocaust Days of Remembrance and other cultural or historical annual events in response to President Donald Trump’s ban on diversity,

Early in his first administration, President Trump noted the general’s “brilliance and fortitude.” And then the president got angry.