Tech mogul and CEO of Tesla and SpaceX Elon Musk was seen cheering on Donald Trump as the latter was sworn in as president on Monday.

Elon Musk, Jeff Bezos and other billionaires were given pride of place behind Trump as he was sworn in as the 47th president.

Cabinet members, governors, and long-serving public servants are positioned in rows behind the tech billionaires, with only family seated ahead of them.

The world’s richest man is about to have a stunning amount of access—physically and digitally—to the White House.

Donald Trump is set to be sworn in as the 47th President of the United States at noon. We'll be posting live updates.

President Donald Trump has declared that America's golden age "begins right now" as he was sworn back into office on a day that featured frigid weather, tech bros, a flurry of executive orders, and a surprise move by Joe Biden.

A saluting gesture made by Elon Musk during his speech at President Donald Trump's inauguration celebration went viral on social media Monday afternoon, with many commentators expressing shock over its similarity to the "Heil Hitler" salute used by the Nazis.

See images of the celebrities and prominent business leaders attending the inauguraton of President Donald Trump in Washington, D.C., on Monday.

The powerhouse podcaster was among a number of household names in attendance as President Trump was officially sworn into office.

Donald Trump attends Service of Prayer as he begins first full day as the 47th President of the United States following his inauguration

On January 20, Donald Trump was sworn in as the 47th President of the United States in an indoor ceremony at the US Capitol Rotunda in Washington DC. People attend the presidential inauguration of Donald Trump in the Rotunda of the US Capitol in Washington on January 20. — Reuters

Tuesday marks Donald Trump's first full day in office. Keep up with the USA TODAY Network's live coverage on his top priorities for Americans.