The Globe and Mail reports in its Wednesday edition that Transport Canada has certified the two remaining Gulfstream jet models at the heart of recent threats by U.S. President Donald Trump against Canada's aerospace industry. The Globe's Nicolas Van Praet writes that the federal department awarded "type certification" to Gulfstream's G700 and G800 planes on Monday, according to the National Aeronautical Product Approval database. Two other Gulfstream models, the G500 and G600, were approved earlier this month. Federal officials had been working behind the scenes to assuage U.S. anger over jet safety approvals after Mr. Trump blasted Canada in a social-media post last month for having "wrongfully, illegally and steadfastly refused" to certify the four Gulfstream jet models. The President said the United States would decertify the Global Express jets made by Canada's Bombardier and "all aircraft made in Canada" until Canada approves the new business jets made by Gulfstream, a unit of General Dynamics Corp. He also threatened to impose a 50-per-cent import tariff on Canadian aircraft sold into the U.S. if his demands were not immediately addressed. In Canada, politicians do not get involved in the certification process.