Meta CEO Mark Zuckerberg is one of many tech-industry leaders and billionaires in attendance.Chip Somodevilla/Getty ImagesTrump was sworn in as president for the 2nd time today.Key business and tech CEOs are in Washington for his inauguration.As his second term begins, business and tech are largely embracing, rather than shunning, him.Donald Trump was sworn in as President of the United States for the second time on Monday — and key business and tech leaders were there to watch it happen.It's not just Elon Musk, the Tesla and SpaceX CEO who spent hundreds of millions of dollars to elect Trump.