A small company in northern Mexico had faced steep competition from China in making straps, plugs, fasteners, grommets, zip ties and clamps. Now, U.S. tariffs have driven a spike in his business.

China: The Trump administration has for now settled on a tariff of 55% on Chinese imports, a level that reflects rates that existed before Trump came to office in January.

The trade relationship between the United States and Mexico, crucial and intricate, has been shaped by the USMCA. However, under President Donald Trump, tariffs have become a central tool in foreign policy,