MSNBC Live with Tamron Hall 09/16/15

GOP candidates ready to rumble

Ahead of the second major Republican showdown of the 2016 campaign, NBC's Peter Alexander reports from the Reagan Presidential Library where the debate will take place. Plus, former RNC Chairman Michael Steele, MSNBC.com Senior Editor Beth Fouhy and Mother Jones Washington Bureau Chief David Corn joins the NewsNation political panel. ... more Duration: {{video.duration.momentjs}}