President Donald Trump is spending his first full day back in the White House meeting with congressional leaders, announcing an investment in artificial intelligence infrastructure and demonstrating one of his favored expressions of power: firing people.

This Inauguration Day, President Joe Biden and first lady Jill Biden will wake up in a White House filled with their belongings and personal mementos -- everything from personal photographs to their favorite foods in the kitchen.

Moving day at the White House is a frenzied but carefully choreographed dance that begins while most of the nation is still in bed.