SÃO PAULO–The U.S. says it intends to diversify its supply chain to reduce its reliance on China. Companies in Brazil say if the U.S. wants their help, it will need to make some changes. Representatives from companies and trade groups say measures, from high tariffs to stringent environmental regulations, present hurdles to selling more products to the U.S., which is looking to move away from countries that present geopolitical and security risks to its supply chain. U.S. Treasury Secretary Janet Yellen has called such an approach "friendshoring." Brazilian steelmakers have long wanted to increase exports to the U.S. but are held back by tariffs and quotas, according to Marco Polo de Mello Lopes, president of the Brazil Steel Institute, a group representing companies including Gerdau SA and Usiminas SA. "Brazil is a longtime supplier of strategic raw materials to the U.S., and we want to increase our exports," Mr. Lopes said. "If the U.S. really wants more sources for steel imports, the first thing they have to do is remove the barriers." The U.S. government placed import tariffs on certain steel products in 2018 and then granted Brazil an exemption for a set amount of the alloy. The quota […]