Wisconsin businesses are once again facing a rapidly changing trade environment. While the legal and political implications of the latest tariff action will be debated for months, companies that rely on Canadian suppliers, customers, or cross-border supply chains need to focus on the practical impact today and begin planning for what comes next.
New Tariffs on Canadian Goods Announced
On July 20, 2026, President Donald Trump signed three proclamations imposing an additional 50% tariff on certain Canadian products under Section 338 of the Tariff Act of 1930. The tariffs are scheduled to take effect on August 19, 2026, and will apply regardless of United States-Mexico-Canada Agreement (USMCA) origin status. The targeted products include Canadian motor vehicles, alcohol, and dairy products.
This action is noteworthy not only because of its potential economic impact, but also because it represents the first known use of Section 338 as the legal basis for imposing tariffs.
Understanding Section 338
When Section 338 of the Tariff Act of 1930 grants the President broad authority to impose additional duties of up to 50% on imports from countries determined to be discriminating against U.S. commerce. Once the President makes such a determination, the tariffs may be implemented through proclamation after a 30-day notice period.
The statute goes even further. If the President determines that discriminatory treatment continues or intensifies, Section 338 authorizes the exclusion of products from that country altogether. The President also retains the authority to suspend, modify, or revoke these measures at any time.
Unlike tariff tools such as Section 301 of the Trade Act of 1974 or Section 232 of the Trade Expansion Act of 1962, Section 338 does not require a formal investigation, agency report, or public hearing before tariffs are imposed. This gives the Administration a relatively fast mechanism to implement trade measures.
The Administration has justified these actions by citing what it characterizes as longstanding discriminatory treatment of U.S. products in the Canadian market. In particular, President Trump pointed to Canada’s protection of its dairy sector through supply management policies, tariff-rate quotas, and market access restrictions that U.S. dairy producers have long argued limit opportunities in the Canadian market. The Administration also highlighted actions taken by several Canadian provinces and retailers to remove many U.S. alcoholic beverages from store shelves following earlier trade disputes. According to the proclamations, these measures constitute unequal treatment of U.S. commerce and provide the basis for invoking Section 338 authority.
Many trade observers believe the Administration may be using Section 338 to fill a temporary gap as earlier tariff authorities expire and several ongoing trade investigations remain unfinished.stood “sanctions relief” as “market opening” and paid the price—either through compliance risk or lost opportunity.
Why This Matters to Wisconsin
Few states have a closer economic relationship with Canada than Wisconsin.
Canada consistently ranks as Wisconsin’s largest export market, purchasing billions of dollars in Wisconsin-made goods every year. Wisconsin manufacturers, agricultural producers, food processors, and transportation companies are deeply integrated into cross-border supply chains. Products and components frequently move back and forth across the border before reaching their final destination.
As a result, these new tariffs have the potential to create ripple effects throughout the state’s economy.
Manufacturing Impacts
Wisconsin manufacturers that import Canadian components or materials may face increased costs and supply chain disruptions. Companies operating in automotive-related sectors could experience particularly significant challenges due to the direct targeting of motor vehicles.
Businesses should evaluate supplier contracts, inventory levels, and potential alternative sourcing options now rather than waiting until tariffs take effect.
Agribusiness and Food Processing Concerns
For Wisconsin businesses, the focus on dairy is particularly noteworthy. As America’s Dairyland, Wisconsin has a strong interest in fair and predictable access to international dairy markets. Many Wisconsin dairy producers have long expressed concerns about barriers that limit U.S. dairy exports to Canada.
At the same time, the new tariffs could create challenges for companies that rely on integrated North American dairy supply chains. Businesses that import dairy ingredients, packaging materials, equipment, or other inputs connected to Canadian suppliers may face higher costs and increased uncertainty.
The broader agricultural sector should also monitor possible Canadian responses and shifts in regional trade patterns that could affect future export opportunities.
Beverage Industry Effects
Wisconsin importers, distributors, retailers, and hospitality businesses that work with Canadian alcoholic beverages may face higher costs and reduced competitiveness once the tariffs are implemented.
For many small and mid-sized businesses, even modest cost increases can have a significant impact on margins, pricing strategies, and customer demand.
Legal Questions Remain
Legal challenges are widely expected because Section 338 has never been tested in this way. However, unlike recently challenged tariffs implemented under the International Emergency Economic Powers Act (IEEPA), Section 338 explicitly grants tariff authority to the President.
Critics also argue that the tariffs appear inconsistent with obligations under USMCA and World Trade Organization agreements. While those concerns may eventually be addressed through legal or diplomatic channels, businesses should not expect a quick resolution. Most experts believe any meaningful remedy is more likely to come through political negotiations than through litigation.
A Narrow Window for Action
There may be a limited opportunity for some companies to reduce exposure before the August 19 implementation date.
As previous tariff measures expire and several pending trade investigations remain incomplete, businesses may have a brief window to accelerate shipments, adjust inventory strategies, or review sourcing plans before the Section 338 tariffs take effect.
Companies that import affected products should work closely with customs brokers, logistics providers, and trade advisors to evaluate their options and develop contingency plans.
Don’t Navigate Trade Changes Alone
Trade policy shifts can create uncertainty, but they can also create opportunities for businesses that plan ahead. Whether your company imports from Canada, exports to international markets, or is considering diversifying its customer base to reduce risk, now is the time to evaluate your global strategy.
The Wisconsin SBDC’s Go Global Initiative helps businesses understand international trade regulations, identify new market opportunities, assess supply chain risks, and develop practical export growth plans.
If your business is concerned about how these new tariffs could affect operations, pricing, sourcing, market access, or future growth, connect with the Wisconsin SBDC Go Global Initiative. Our international trade specialists can help you understand the risks, identify opportunities, and develop a strategy to succeed in today’s increasingly complex global marketplace.
To learn more or connect with a trade advisor, request a free consulting appointment with the Wisconsin SBDC Go Global Initiative today.