Is the president's war against ISIS illegal?
Senator Rand Paul believes it is. The Kentucky Republican, who is eyeing a presidential run, wrote an op-ed in The Daily Beast, saying: "...this war is now illegal. It must be declared and made valid, or it must be ended. Congress has a duty to act, one way or the other."
OutFront, Elise Jordan, who is advising Senator Paul on foreign policy issues and Lanny Davis, former White House special counsel in the Clinton administration.