Canada confirms $27.6B counter-tariffs: 15%, 25% and 50%, effective Sept. 8

US Section 338 tariffs take effect; Carney declares Canada "at war"

Talks in Washington collapse days before the deadline

Trump signs Section 338 proclamations, opening a new tariff front

US declines to renew CUSMA at the mandatory 6-year review

Supreme Court strikes down the tariffs' legal basis — briefly

Canada rolls back most of its retaliatory tariffs

Both sides impose matching 25% tariffs on autos