OTTAWA—The federal Liberals have put the White House on notice that Canada will officially challenge the legality of an American decision to hike duties on softwood lumber heading south of the border. The government is filing the grievance under the recently renewed North American free trade pact. Trade Minister Mary Ng says in a statement…

BRUSSELS—The European Union is set to impose duties on aluminium from China in October, only to suspend them for nine months, the EU industry association said on Wednesday, adding that this would threaten jobs and send the wrong signal to Beijing. The European Commission launched an investigation into aluminium flat-rolled products, which are used in…

WASHINGTON—As U.S. Trade Representative Katherine Tai prepares to meet her Canadian and Mexican counterparts on Monday to review progress in the new North American trade agreement, she is under pressure from home builders and lawmakers to cut U.S. tariffs on Canadian lumber. Shortages of softwood lumber amid soaring U.S. housing demand and mill production curtailed…