Collapse of trade talks could lead to job losses, but biggest impact on traditional allies is expected to be political The US has imposed 50% tariffs on some goods from Canada, and the country’s prime minister, Mark Carney, has vowed to match them “dollar for dollar” after the collapse of trade talks.The tariffs came into force on about $20bn (£14.6bn) of goods – ranging from hockey sticks to tongue depressors – at 04.00 GMT. Trade experts said the tariffs could result in some job los