Tillis: Trump endorsing Paxton over Cornyn was 'colossal mistake'

Republican Sen. Thom Tillis (N.C.) on Sunday blasted President Trump for endorsing Texas Attorney General Ken Paxton over incumbent Sen. John Cornyn in the Lone Star State's Senate Republican primary earlier this year.  “In the case of Cornyn, he made a colossal mistake,” Tillis told host Jake Tapper on CNN’s "State of the Union," referring...