In his first major campaign event of 2024, President Joe Biden on Friday, the eve of the third anniversary of the Jan. 6, 2021, attack on the U.S. Capitol, delivered a speech near Valley Forge, Pennsylvania, to argue democracy and fundamental freedoms are under threat if former President Donald Trump returns to the White House. The president was closely involved in writing the speech, aides told ABC News Chief White House Correspondent Mary Bruce, after he met this week with historians and scholars at the White House, and is expected to say that Trump and far-right extremists are a threat...