Canadian team at NAFTA talks is very frustrated -- union chief

MEXICO CITY, March 2 (Reuters) - Canadian officials at talks to update NAFTA are very frustrated in the wake of President Donald Trump's announcement he plans to impose tariffs on steel and aluminum, a union leader said on Friday after talking to Canada's chief negotiator.

"The Canadian team is completely frustrated. It's clear the entire tone of NAFTA negotiations has taken a step backwards," Unifor boss Jerry Dias said when asked about his conversation with Steve Verheul, who heads the Canadian delegation. (Reporting by David Ljunggren)