CNN host Jake Tapper pressed Sen. Bernie Sanders on Sunday on why Vice President Kamala Harris is out campaigning with Liz Cheney, a Republican, rather than the progressive Vermont senator.
"What does it say the Kamala Harris is starting this week with only 16 days left, campaigning with Liz Cheney, a very conservative former congresswoman, daughter of Dick Cheney, obviously, but she has not yet held a public campaign event with you, arguably the leader of the progressive movement in the United States?" Tapper asked.
Cheney...