This seems an unusual issue to be demanding a purity test on. Most republicans believe that the constitution gave the power to declare war to the congress and no one else. So the congress passed an unconstitutional law and now wants it back. I'm glad they are not getting it back now for partisan reasons but it should be rescinded by overriding a veto in both houses as no President should ever give up power. The framers envisioned a constant struggle for power between co-equal branches. Not a lazy congress giving away power...