Mexican President Claudia Sheinbaum says she is \”optimistic\” about the future of the trade relationship with the United States. But she also warned Mexico \”cannot give up our sovereignty\” Last week, US counterpart Donald Trump agreed to offer another month of temporary relief on threatened tariffs on imports from Mexico. But on Thursday, Trump once again put a pause on plans to impose a 25 percent tariff on imports into the U.S. from Mexico — which represent 80 percent of Mexican exports. He said he had done this out of respect for Sheinbaum and argued that the pair have a \”very good\” relationship. The USMCA is a trilateral free trade deal between the US, Canada and Mexico, with most products covered by the deal covered by tariffs under the new deal. The biggest impact of a trade war would be on the manufacturing production chains of the three USMca partners, experts warn. The deal is due to take effect on April 2, but some fear it could be extended beyond that date.