50% Tariffs on $20 Billion in Canadian Imports Take Effect After Last-Minute Talks Fail

A 50% ad valorem duty on nearly $20 billion in Canadian imports — from wine to building materials — took effect at 12:01 a.m. ET on August 19, 2026. U.S.-Canada talks on August 18 yielded no public agreement to delay or alter the measures, imposed under Section 338 over what the administration calls Canadian discrimination against U.S. commerce in motor vehicles and dairy.