European futures data pointed to a broadly negative open for shares listed in the region on Wednesday, as investors weighed U.S. proposals for sweeping new tariffs on 60 countries. The Office of the U.S. Trade Representative has floated additional tariffs of up to 12.5% on 60 trading partners over their alleged failure to ban goods made with forced labor. The economies in line to be targeted by the measures include China, the European Union and Japan. "The failure of our most important trading