When President-elect Donald Trump boarded Air Force One for what then seemed likely to be the last time on Jan. 20, 2021, he was a pariah. He had failed to secure reelection to a second consecutive term the previous November, and a riot at the Capitol by some of his supporters had prompted new impeachment charges against him.

Republicans up and down the ranks of Congress were eager to condemn him and turn the page on one of the most revolutionary political figures in modern political history. But now, four years later, Trump has secured the greatest political comeback in American history and will take the oath of office for a second time on Jan. 20, 2025, with a mandate to change the federal government fundamentally.