India, Jan. 30 -- President Donald Trump has said that he is decertifying all Canada-made aircraft and threatened to impose 50 percent tariff on those planes unless Canada certify the sale of U.S. Gulfstream products.

"Based on the fact that Canada has wrongfully, illegally and steadfastly refused to certify the Gulfstream 500, 600, 700 and 800 Jets, one of the greatest, most technologically advanced airplanes ever made, we are hereby decertifying their Bombardier Global Expresses, and all Aircraft made in Canada, until such time as Gulfstream, a Great American Company, is fully certified," Trump wrote on Truth Social Thursday.

"Canada is effectively prohibiting the sale of Gulfstream products in Canada through this very same certificatio...