The imbalance in President Trump’s treatment of America’s closest trading partners may come from his desire to make Canada the 51st state, some Canadians believe.

In February, Trump reignited trade tensions by announcing a 25% tariff on imports from major allies like Canada and Mexico, alongside a 10% tariff on goods from China. The measures set off a chain of retaliatory responses and fierce negotiations.

President Trump announced Thursday that the U.S. would raise tariffs on certain Canadian goods from 25 percent to 35 percent beginning Friday. Goods that are covered under the 2020 United States-Mexico-Canada Agreement will be exempt from the tariff rate,