The U.S. will file a complaint today with the WTO over China's quota for rare earth exports,...Mar. 13, 2012 3:41 AM ETBy: Rachael Granby, SA News Editor5 Comments The U.S. will file a complaint today with the WTO over China's quota for rare earth exports, with Pres. Obama expected to personally announce the action. Recommended For YouTrending AnalysisTrending News