China has formally requested consultations with the U.S. at the World Trade Organization over the Trump administration’s “reciprocal” tariffs, arguing the duties violate WTO rules and “seriously undermine” the global trading system. Beijing announced last week that it would challenge the duties at the WTO. In its official request , made public on Tuesday, the country said the “measures at issue appear to nullify or impair benefits accruing to China.” Specifically, Beijing is saying the tariffs – in China’s case,...