FILE - President-elect Obama and President Bush stand together on the West Wing Colonnade of the White House in Washington, Monday, Nov. 10, 2008. (AP Photo/Charles Dharapak, File)

FILE - President George H.W. Bush gestures toward President-elect Bill Clinton at the White House, Nov. 18, 1992, in Washington. (AP Photo/Barry Thumma, File)

FILE - Former President Donald Trump, right, and Melania Trump disembark from their final flight on Air Force One at Palm Beach International Airport in West Palm Beach, Fla., Jan. 20, 2021. (AP Photo/Manuel Balce Ceneta, File)

FILE - President Barack Obama, right, meets with President-elect Donald Trump in the Oval Office of the White House in Washington, Nov. 10, 2016. (AP Photo/Pablo Martinez Monsivais, File)

FILE - President Bill Clinton, right, and President-elect George W. Bush pose for photographers as they head to the Oval Office at the White House Dec. 19, 2000. (AP Photo/Ron Edmonds, File)