President Obama has said he will take executive action on immigration by the end of the year; now, as NPR's Tamara Keith tells Audie Cornish, there are reports he could act as soon as the end of next week. We’ll talk with Ken Rudin -- The Political Junkie -- about what that means for bi-partisan politics moving forward. Rudin joins us from Washington D.C. in an effort to put it all in perspective.