Morning Joe 07/18/13

Is it a winning strategy for Cheney to 'knock the old guy'?

Top Talkers: The daughter of former VP Dick Cheney, Liz Cheney, is set to challenge veteran Sen. Mike Enzi for the GOP Senate nomination in Wyoming. But did Cheney insult Enzi's age when saying a new generation of leaders should step up? The Morning ... more Duration: {{video.duration.momentjs}}