Canada’s sovereignty call-to-arms has largely been expressed through what we buy. Shoppers fiercely scrutinize labels and corporate ownership to determine whether a product is truly “Canadian.” But while we’re paying closer attention to the origin and composition of the products we’re purchasing, we’re not really thinking about how we pay for them. That needs to change.

Kimberly Prost probably thinks about it every day. The Canadian International Criminal Court judge has been sanctioned by the Donald Trump administration since August 2025 for authorizing investigations into alleged war crimes by American personnel in Afghanistan, as well as cases related to Israel’s conduct in Gaza. Those sanctions mean that when Prost goes on vacation, she needs to phone hotels in advance to explain why she can’t pay for her stay with a credit card.

Prost is navigating a financial shadow ban because global commerce moves through an Americanized network. In 2025, Visa and Mastercard controlled 96 percent of Canada’s credit card market. We have a strong domestic debit system with Interac, but even that independence is eroding: Visa and Mastercard have partnered with Interac on co-badged cards, while many consumers pay with Apple-issued iPhones or use terminals run by American companies, such as Chase, Global Payments, Square, and Stripe.

A system that inconveniences a judge today could, in theory, be turned against a whole country tomorrow. The United Kingdom is reportedly exploring a national alternative to Visa and Mastercard over fears Trump could use United States–owned payment providers to freeze its economy. European officials have warned the continent is dangerously exposed to such coercion.