Canada has suspended trade negotiations with the United States after Prime Minister Mark Carney rejected Washington’s latest terms as unfair and uneconomic. Carney accused America of using economic integration as a weapon against its closest allies and warned that its commitments could no longer be taken for granted. Ottawa had offered concessions involving retaliatory tariffs, U.S. alcohol and strategic industries, but drew a line at Canadian sovereignty. Negotiators have now been ordered home after talks collapsed. What did Washington demand that finally pushed Carney to walk away from the negotiating table?