U.S. Steel (X) rallied in premarket trading after President Trump gave the green light on a partnership between it and Nippon Steel. Jenny Horne talks about the rocky road both companies treaded to today's approval and how it shakes up the steelmaker industry. She later turns to AMD Inc. (AMD) and how it may be "getting credit where credit is due" with Piper Sandler upping its price target on the stock.