In the early afternoon, Mr. Trump is scheduled to hold a campaign-style rally at Capital One Arena, blocks from the National Mall, his first such address in Washington, D.C., since the election in November. The president-elect will end his day by attending a candlelight dinner with supporters.

Trump will kickstart his second presidency with a blizzard of executive orders. More than 100 are expected to be signed on day one of entering the White House, allowing the new president to effectively bypass Congress to deliver on some of his priorities.