Shields and Lowry on GOP Veep Choice Paul Ryan, Medicare

Aired: 8/17/2012 | 0:13:08 | Clip
Syndicated columnist Mark Shields and National Review editor Rich Lowry discuss the week's top political news, including how having Rep. Paul Ryan as the GOP vice presidential candidate has energized the Republican base, the debate of Medicare on the campaign trail and continuing calls to release Romney's tax returns.