Rep. Ted Lieu calls on FBI to launch investigation into postmaster general, U.S. Postal Service

Democratic Congressmen Ted Lieu and Hakeem Jeffries are calling on the FBI to investigate the postmaster general and U.S. Postal Service to determine if they've committed crimes with their recent changes. Congressman Lieu joins CBSN's "Red & Blue" to discuss the USPS controversy and what he's watching for in the Democratic National Convention.