Protest live updates: DC, nation stay quiet under extraordinary security; New Mexico county commissioner arrested, linked to Capitol riot John Bacon and Jordan Culver, USA TODAY President-elect Joe Biden's inauguration is coming up, here's what you need to know Replay Video UP NEXT The nation's capital was quiet Sunday amid unprecedented security measures as Americans braced for possible violence ahead of the inauguration of President-elect Joe Biden. National Guard troops were monitoring Washington, D.C., as well as many state capitals after law enforcement officials warned of possibly violent protests this week by supporters of President Donald Trump, who falsely claims the election was stolen from him.