On The DMZ, Matt reveals the long-buried truth behind his mysterious middle initial, then defends Karl Rove’s statement about Hillary Clinton’s mental faculties. How should older politicians respond to attacks based on their age? Bill and Matt do a deep dive into the Nebraska GOP primary, where Tea Party favorite Ben Sasse triumphed. Is there any hope left for passing immigration reform this year? Plus: Does the rash of canceled commencement speeches shows that liberals don’t actually care about free speech?