MSNBC Live with Tamron Hall 05/28/15

Fmr. Gov. George Pataki jumps into 2016 race

Former New York Governor George Pataki and Rick Santorum are the latest Republicans to enter the 2016 race for president. Why are so many candidates jumping in? MSNBC Political Reporter Benjy Sarlin explains. ... more Duration: {{video.duration.momentjs}}