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.

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 ...

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.

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.

President Joe Biden announced a series of last-minute pardons before leaving office Monday, granting preemptive pardons to some family members and other GOP foes, as well as a posthumous pardon for Marcus Garvey, the late civil rights leader and founder of the Universal Negro Improvement Association.

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

Susie Wiles, a seasoned political strategist, has made history as the first woman named Donald Trump’s White House Chief of Staff. With decades of experience, including roles in Reagan’s campaign and Trump’s 2016 victory,

"My family and I are deeply grateful for the President's action today," Milley said in a statement to USA Today provided by a spokesperson.

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