Argentine President Javier Milei's attendance is historically significant. No serving foreign leader has ever attended a U.S. presidential inauguration.

The guest list includes some of America’s most influential tech billionaires and politicians as well as some foreign leaders and celebrities who have embraced Trump.

Every four years America’s President is sworn in on Inauguration Day, whether newly elected or returning to office, in a long-established ceremony held amid pageantry shaped by the incoming leader’s personal flourishes.

Chinese leader Xi Jinping spoke with President-elect Donald Trump on Friday on the heels of Beijing’s plan to dispatch the nation’s vice president to next week’s inauguration.