Tariffs remap supply chains

A year into the tariff push, the map changed faster than the math. Royal Bank of Canada says the United States cut imports from China, but the overall goods trade deficit still hit a record $1.23 trillion in 2025 because buyers shifted orders to other countries instead of stopping orders altogether. (rbc.com) Mexico is the clearest example of that rerouting. The Office of the United States Trade Representative says the U.S. goods deficit with Mexico rose to $196.9 billion in 2025, up $25.4 billion from 2024, even after tariffs hit some Mexican goods at 25 percent during the year. (ustr.gov) (rbc.com) That happened because modern factories are built like relay teams, not islands. Royal Bank of Canada says products once assembled in China were increasingly sourced from Mexico, Vietnam, Taiwan, and Thailand, so the shipment changed passports even when the U.S. demand underneath it barely changed. (rbc.com) Mexico kept gaining ground because the United States-Mexico-Canada Agreement still shields a large share of North American trade if goods meet regional content rules. Trade lawyers at Foley & Lardner wrote in April 2025 that exports from Mexico complying with that pact were exempt from the new reciprocal tariffs and represented about half of Mexico’s exports to the United States. (foley.com) The same pattern showed up beyond Mexico. Royal Bank of Canada says the U.S. deficit with Taiwan almost doubled to $146.8 billion in 2025, while global trade outside the United States grew 4.4 percent, which is the opposite of a world pulling back from cross-border production. (rbc.com) Inside the United States, the legal ground under the newest tariff layer is now wobbling. Reuters reported on April 10, 2026, that the Court of International Trade was hearing challenges to the administration’s 10 percent global import tax, which took effect on February 24 and was challenged by 24 mostly Democratic-led states and two small businesses. (usnews.com) (politico.com) The lawsuit turns on an old question with very current consequences: how much tariff power a president can claim without Congress. Reuters says the challengers argue the administration used the Trade Act of 1974 to sidestep a Supreme Court ruling that had already struck down most of Trump’s earlier across-the-board tariffs. (usnews.com) (aljazeera.com) For companies, that means the tariff bill is no longer just a cost problem. It is a planning problem, because a factory contract signed in April 2026 has to account for tariffs that may stay, disappear, or be refunded depending on what the trade court does next. (usnews.com) (politico.com) The result so far is not a clean return of production to Ohio or Michigan. It looks more like a detour map, with goods moving through friendlier tariff lanes, more paperwork tied to rules of origin, and a trade system that is more expensive and less predictable than it was a year ago. (rbc.com) (foley.com)