Canada’s retaliatory tariffs take effect as Trump threatens to ban Bombardier jet sales in USPresident Donald Trump on Monday threatened to ban the sale of Canadian Bombardier jets if they are not built in the United States, hours before Canada moved forward with $20 billion worth of retaliatory tariffs on American goods, which took effect at 12:01 a.m. ET Tuesday.Cable News Network1mo agoWhole story →EconomyDonald Trumpus canada trade war escalation