Joe Biden has wrapped up a more than 50-year political career. But he also promised that “we’re not leaving the fight,” as he bid farewell to the presidency and flew to California with his family to ease back into private life.

Every president since Ronald Reagan has left a note for his successor, and President Biden is the first to write a letter to someone who is both his successor and the predecessor who left a note for him.

In his final hours in office, President Joe Biden issued a pardon to a prominent Kentucky Democrat convicted years ago on election finance violations.