restrictions while investigations continue. but little has changed. china produces more than 90% of the world's rare earths. the materials are used in a variety of high-tech products. the u.s. is preparing to resume its own production. the three parties plan to negotiate with china in accordance with the wto procedures. if they cannot solve the issue through the talks, they will request dispute settlement consultation. u.s. president barack obama indicated he would take a firm stance toward china. assistants -- stance towards china. >> we prefer dialogue, and that is especially true ...