First it was just radical islamic terrorism happening on the other side of the world. But now it's threatening us here at home. So when politicians say they understand national security, we have to check that record. Because Marco Rubio worked side-by-side with liberal Democrat Chuck Schumer to push a plan for amnesty, increasing visas, and ignoring sanctuary cities. Marco Rubio simply doesn't understand that border security is national security. Stand for Truth, Inc. is responsible for the content of this advertising.