US threatens to ‘decertify’ Canadian aircraft as rift with Ottawa deepens
Trump threatens tariff on Canada-made aircraft sold into US unless Gulfstream jets receive certification
Trump threatens tariff on Canada-made aircraft sold into US unless Gulfstream jets receive certification

Tariffs and vow to ‘de-certify’ planes baffles industry and hits share price of Bombardier

Trump administration says high levies imposed on partners are ‘locked in’

North American tensions resurface after Mark Carney warned of ‘rupture’ in global order at Davos

US policy of regional domination is being greeted with alarm by its northern neighbour

Trading partners from Taiwan to Canada hit with steep new levies

Investigations could lead to fresh levies after US Supreme Court struck down many of Trump’s tariffs