From San Diego to Manhattan, supporters gathered at a Washington arena to catch a glimpse of Trump on Inauguration Day. Read what they had to say about Trump's return to office.

President Donald Trump signed a series of executive actions before 20,000 supporters for an indoor inaugural parade Monday inside Capital One Arena, after being sworn in as the 47th president of the United States.

Billionaires at the Capitol on Monday included Tesla founder and CEO Elon Musk, Amazon founder Jeff Bezos, Meta CEO Mark Zuckerberg, former presidential candidate Vivek Ramaswamy, OpenAI CEO Sam Altman, billionaire Trump supporter Miriam Adelson, media mogul Rupert Murdoch and others.