Scope: Federal
Branch: Executive
Severity: Amber
Date occurred: September 8, 2026
The President signed a proclamation on September 8, 2026 excluding specified Canadian products from importation into the United States, citing continued discrimination against U.S. commerce with respect to dairy. The proclamation was published in the Federal Register on September 14, 2026.
Constitutional basis: Rarely-invoked foreign-discrimination trade authority used to bar imports outright rather than adjust duties, going beyond the settled tariff-proclamation pattern.