Today in the Senate, a funny thing happened. We fought on principle, and we won on principle. You know why? Because 3 U.S. Senators didn’t listen to the “do something” caucus and the hand-wringers parading as leaders in Washington. Instead, Senators Cruz, Lee and Paul circulated a warning prior to the last recess saying they would (gasp) filibuster any legislation that would undermine our God-given, fundamental right to bear arms. It just so happens that this God-given right is enshrined in the Constitution. We have a play book, ladies and gentleman: fight and win. Thankfully these fresh faces in...