Beyond a SCOTUS Tariff Bombshell: How Trump — and Canada — Could Double Down

By Lawrence Herman, senior fellow, C.D. Howe Institute
Canadian Politics and Public Policy
September 6, 2025
Category: Business & Politics
Region: United States

Lawrence Herman

The cheering was fleeting last week after the US Federal Court of Appeals ruled many of Donald Trump’s broad-based “Liberation Day” tariffs illegal. The case is now headed to the US Supreme Court, the administration has asked the Court to fast-track its decision on whether to take up the case. …The default assumption is that SCOTUS will give Trump a victory. But if the Court were to rule against him on his use of the International Economic Emergency Powers Act (IEEPA) to justify his trade war, there’s a slew of other tariff weapons he can use. …This is a trade war, after all, unprecedented in nature and scope, waged by an administration battling not only other Western democracies but against the norms and precedents of its own country. …It’s worth taking a moment to look at the tariff weapons that Canada has available for use as possible countermeasures.

Read More