Democratic Senator Elizabeth Warren took an accidental tumble while on the Senate floor. Moseying around atop the Senate chamber's blue carpet floors Warren can be seen on video deep in thought. She then halts and attempts to lean back on a desk at the front of the chamber. Suddenly, it tilts over and sends the senator crashing onto the desk. Lawmakers immediately run over to help the Massachusetts Democrat off the historic desk. Sens. Ted Cruz, R-Texas, and Tammy Duckworth, D-Ill., were the first on the scene offering a helping hand to the 76-year-old lawmaker. Warren's office did not immediately...