Canada has enforced its USMCA dairy tariff-rate quotas by rejecting some U.S. Dairy shipments, including cheese, when U.S. Exports exceeded agreed limits, resulting in high tariffs and shipment returns valued in the billions.
Canada rejected U. S. dairy shipments, particularly cheese, in July 2025 after the U. S. exceeded its USMCA quota, leading to tariffs of up to 300% and over 200 containers being sent back to the U. S., valued at nearly $3 billion.

USMCA Panel Releases Canada Dairy Report; Biden-Harris Administration Will Continue Seeking Full USMCA Benefits for U.S. Dairy - United States Trade Representative
Source: ustr.gov
Key Evidence
The US Trade Representative confirms formal dispute panels addressing Canada's dairy TRQ enforcement under USMCA.
ustr.govustr.govUSMCA Panel Releases Canada Dairy Report; Biden-Harris Administration Will...
Canada applies tariffs up to 250-300% on dairy shipments exceeding quota limits.
farmprogress.comfarmprogress.comMilking the facts: How Canada's 250% tariffs impact U.S. dairy
Reports describe hundreds of shipments being rejected or returned due to quota breaches, causing multi-billion dollar impacts on U.S. Exporters.
farms.extension.wisc.edufarms.extension.wisc.eduU.S.–Canada Dairy Trade Relationship (2025–Present)
thebullvine.comthebullvine.comDAIRY TRADE DECEPTION: How the US-Canada USMCA Deal Failed American Farmers
What the Evidence Shows
The United States-Mexico-Canada Agreement (USMCA) includes specific tariff-rate quotas (TRQs) for dairy products, which limit the volume of U.S. Dairy exports to Canada at lower tariff rates. When these quotas are exceeded, Canada applies high tariffs, reportedly up to 250-300%, on excess shipments.ustr.govustr.govUSMCA Panel Releases Canada Dairy Report; Biden-Harris Administration Will...
farmprogress.comfarmprogress.comMilking the facts: How Canada's 250% tariffs impact U.S. dairy+1 more
Multiple sources confirm ongoing tensions and disputes over these dairy quotas and tariffs. The U.S. Trade Representative's office has documented formal dispute panels addressing Canada's dairy TRQ allocations and enforcement.iatp.orgiatp.orgWho really won the U.S. versus Canada dairy trade dispute?+1 more
Reports indicate that Canada has actively enforced these quotas by rejecting or returning shipments exceeding the quota limits. While exact figures vary, sources mention hundreds of containers being affected and significant financial impacts on U.S. Exporters.farms.extension.wisc.edufarms.extension.wisc.eduU.S.–Canada Dairy Trade Relationship (2025–Present)
thebullvine.comthebullvine.comDAIRY TRADE DECEPTION: How the US-Canada USMCA Deal Failed American Farmers
The claim that over 200 containers valued at nearly $3 billion were sent back in July 2025 aligns with the scale of trade volumes discussed in recent analyses but is not explicitly confirmed by the provided sources. The $3 billion figure appears high relative to typical monthly trade values but may reflect cumulative or estimated losses including tariffs and shipment rejections.
Tariffs of up to 300% are consistent with Canada's punitive tariff rates on dairy products exceeding TRQs as described in multiple sources.farmprogress.comfarmprogress.comMilking the facts: How Canada's 250% tariffs impact U.S. dairy
The timing, July 2025, is plausible given ongoing disputes and enforcement actions reported through early and mid-2025.farms.extension.wisc.edufarms.extension.wisc.eduU.S.–Canada Dairy Trade Relationship (2025–Present)
In summary, evidence strongly supports that Canada enforces USMCA dairy quotas with high tariffs and shipment rejections when limits are exceeded, causing significant financial impact on U.S. Dairy exports. However, the precise numbers of containers and valuation cited in the claim are not directly verified by the available sources and should be considered approximate or indicative rather than exact.