Trump ramps up attacks on U.S. Postal Service and mail-in voting

President Trump is escalating his rhetoric against mail-in voting as he threatens to block funding for the U.S. Postal Service ahead of the November election. CBSN political reporter Caitlin Huey-Burns has done extensive reporting on this issue, and she joins CBSN to explain the latest developments as well as the latest on plans for next week's Democratic National Convention.