The National Post reports in its Saturday edition that U.S. Trade Representative Jamieson Greer said President Donald Trump will not tolerate retaliation from Canada. The Post's Jordan Gowling quotes Mr. Greer saying Friday: "If a country retaliates against us, we're obviously not going to tolerate that. We'll take action. My sense is the Canadians, they want to have a more conciliatory approach, but we'll see." Canada-U.S. Trade Minister Dominic Leblanc and chief trade negotiator Janice Charette have met with Mr. Greer several times over the last several weeks. Threatened are $29-billion worth of Canadian goods. Canada is also looking for relief on Section 232 tariffs on Canadian autos, lumber, steel and aluminum. Currently there are 50-per-cent tariffs on primary steel, aluminum and copper products, 25-per-cent tariffs on autos, and 10 per cent tariffs on softwood lumber. Trade talks intensified after Trump threatened to impose a 50-per-cent tariff on Canadian goods effective Aug. 19. Mr. Greer said Friday that the issues related to U.S. alcohol boycotts, quotas for the U.S. under Canada's dairy supply management system and procurement rules that must "be resolved" for Canada to avoid Section 338 tariffs.