Washington, D.C. security tightens ahead of Biden's Inauguration
Security is on high alert in Washington, D.C. and at state capitol buildings across the U.S. ahead of Wednesday's presidential inauguration. CBS News correspondent Nikole Killion reports from the White House, and CBS News senior investigative correspondent Catherine Herridge joins CBSN's Lana Zak with more details about the security cues officials are getting from intelligence bulletins.