Canada-U.S. trade talks collapsed after Prime Minister Mark Carney said Washington had asked for too much and offered too little, prompting Ottawa to prepare dollar-for-dollar tariffs on U.S. goods. The measures will target sectors including steel, dairy, appliances, agricultural equipment, pulp and paper, and electronics. Carney said Saturday that the latest U.S. proposals were “uneconomic, unfair” and raised doubts about whether any agreement would deliver lasting benefits for Canada. The