AP: FBI vetting 25,000 National Guard troops amid fears of insider attack ahead of inauguration

An unprecedented security operation is underway in Washington, DC amid growing fears of an insider attack ahead of President-elect Joe Biden's inauguration. The Associated Press reports the FBI is vetting all 25,000 National Guard troops pouring into the capital for Wednesday's events. CBS News chief justice and homeland security correspondent Jeff Pegues joins CBSN to break down the latest developments.