Nvidia (NVDA 3.86%) has faced its share of negative news in recent weeks, from a halt on its exports to China to uncertainty about tariffs on imports into the U.S. of its chips. That's why the generally high-flying stock has flown much lower in recent times. Nvidia, after soaring 800% over the past two years, has slipped 26% since the start of the year.The U.S. recently informed Nvidia that it would need a license to continue selling its chips to China -- meaning the company can't fulfill current orders, an ...