How will super PAC money mold the race for 2016?

Aired: 7/13/2015 | 0:08:04 | Clip
Amy Walter of the Cook Political Report and Tamara Keith of NPR join Gwen Ifill to discuss super PAC campaign fundraising, Wisconsin Gov. Scott Walker’s entrance into the 2016 race and how Hillary Clinton is speaking out on immigration in the wake of comments by Donald Trump.