President Donald Trump has refused to say what he will be doing on Inauguration Day. But while the possibility of his shunning President-elect Joe Biden’s swearing-in ceremony — as well as no sign of an invitation for Biden and his wife, Jill, to the White House before Biden’s swearing-in — may earn Trump headlines, it will do nothing to stop one sacred tradition: The White House’s dedicated residence staff will be moving the Bidens into the White House and the Trumps out on January 20, whether Trump likes it or not.