Donald Trump threatens Canada with 50% tariff, decertifies Bombardier Jets; Full detailsUS President Donald Trump has escalated trade tensions with Canada by threatening to impose a 50 percent tariff on Canadian aircraft. Accusing Canada of unfairly denying certification to Gulfstream jets, Trump announced the decertification of Bombardier Global Express planes in the US. This decision is feared to further intensify existing trade tensions between the US and Canada. Trump clarified that this de-certification will remain in effect until Canada fully certifies Gulfstream jets. 50 Percent Tariff ThreatTrump further warned that if Canada does not immediately rectify the matter, the US will impose a 50 percent tariff on all aircraft imported from Canada.