Tensions over sharp differences in pay between Mexican workers and their Canadian and U.S. counterparts surfaced on Sunday as negotiators discussed labor market rules in talks to overhaul the North American Free Trade Agreement. Canada’s biggest private-sector union said NAFTA should be scrapped if Mexico cannot agree to better labor standards, clashing with Mexican business leaders who argued that workers rights were a matter for each country to resolve internally. Mexican political and corporate leaders firmly resist demands to bring wages into line with U.S. and Canadian levels, arguing the big cost advantage the ... (full story)