This week: shootings in Colorado Springs and San Bernardino have amplified political debates over gun control and national security. Plus the state of the GOP primary, what Donald Trump's continued front-runner status means for the party, and what the NPR Politics team just 'can't let go' this week. This episode: Tamara Keith, White House correspondent; Sam Sanders, campaign reporter; Domenico Montanaro, political editor; Don Gonyea, national political correspondent. Find the team on Twitter @nprpolitics and at npr.org/politics.