US policies threatening existence of WTO - China

China warned on Monday that U.S. policies are threatening the existence of the World Trade Organization, setting out a string of grievances in a WTO "reform proposal" published by the WTO on its website. China did not name the United States in the document, but referred to the block on appointment of WTO appeals judges and "national security" tariffs on aluminium, steel and cars, policies uniquely associated with Washington.