Two Republican lawmakers from Wisconsin on Wednesday sent U.S. Trade Representative Katherine Tai a list of questions about the Section 301 tariff exclusion process that they say former USTR Robert Lighthizer failed to adequately answer before leaving office. “The Section 301 tariffs cause businesses to experience decreased international competitiveness, supply chain disruption, lost market access, and decreased employment and investment,” Sen. Ron Johnson and Rep. Bryan Steil wrote in the March 31 letter to Tai. “We write on behalf of...