U.S.-Canada agricultural trade has expanded with few interruptions across the entire CUSTA-NAFTA-USMCA period, the U.S. Department of Agriculture reports in a new assessment of the two countries' farm trade relationship.

The USDA finding covers a policy arc stretching from the Canada-United States Trade Agreement (CUSTA) of 1989, through NAFTA in 1994, to the U.S.-Mexico-Canada Agreement (USMCA), which took effect in 2020. Across that span, the department describes bilateral agricultural trade growth as sustained, with few breaks in the upward trend.

What does the finding mean for growers and processors?

For U.S. farm operators, the report's core conclusion frames Canada as a stable, long-run export market rather than a volatile one. Tariff preferences negotiated under CUSTA and carried forward through NAFTA and USMCA gave grain, livestock, horticulture and processed-food exporters a predictable access regime on the northern border, and USDA's characterization of "few interruptions" indicates that trade frictions — where they occurred — did not reverse the expansion.

The continuity matters for basis and marketing decisions. When access rules stay stable across three successive agreements over more than three decades, northern-tier elevators, feed buyers and processors can plan cross-border flows with less policy risk premium embedded in their bids.

How should readers weigh the claim?

USDA's assessment is a retrospective of trade patterns over the full agreement period, not a forecast of current-year flows. It reflects the department's review of the trade relationship during the CUSTA-NAFTA-USMCA era, and readers should treat it as a condition report on the long-run relationship — distinct from monthly export sales data or quarterly trade surveys with defined reporting windows.

The report's framing also carries a policy signal. As U.S. trade negotiators weigh reviews and potential adjustments to USMCA, USDA's historical account of uninterrupted expansion under the earlier agreements supplies the baseline against which any future disruption — new tariffs, quota changes or rule-of-origin revisions — would be measured.

Why the three-agreement arc matters

CUSTA, the 1989 bilateral pact, was the first step in liberalizing farm trade between the two countries. NAFTA extended the framework to Mexico in 1994, creating a continental market. USMCA replaced NAFTA in 2020 with updated rules on agriculture, dairy access and origin requirements.

USDA's conclusion that agricultural trade expanded with few interruptions across all three regimes suggests the tariff and access architecture, once established, functioned durably through commodity cycles, currency swings and periodic bilateral disputes.

The department has not indicated in the released material that the expansion is slowing, and its historical accounting positions the U.S.-Canada corridor as one of the most consistent performers in American agricultural export trade — a record growers and policymakers will reference as USMCA's own review timeline advances.