Former Acting DHS Secretary Chad Wolf says it's an "ongoing question" why Capitol Police weren't prepared
Chad Wolf, who was acting secretary of the Department of Homeland Security in the Trump administration, joins CBSN's "Red & Blue" host Elaine Quijano to discuss the new changes the Biden administration is making to the immigration system, as well as what his department knew about the threats leading up to the January 6 attack on the U.S. Capitol.