The tariffs threaten to disrupt North America’s tightly integrated oil industry and raise demand for US crude to backfill any Canadian or Mexican barrels that are diverted elsewhere to avoid the levies. Still, the tariffs’ effects may be blunted by the fact that many American refineries were built to handle those countries’ heavy crudes, rather than domestically produced light oil, leaving them limited options for substitution. The US receives about about 4 million barrels a day from Canada and about 400,000 barrels a day from Mexico.
