Canadian Prime Minister Mark Carney said retaliatory tariffs on U.S. goods will take effect on Sept. 8. He referred to Trump's tariffs as "a miscalculation."
No deal reached in U.S.-Canada trade talks as 50 percent tariffs take effect The Washington PostU.S.-Canada trade talks collapse, setting new 50% tariffs in motion NBC NewsWaking Up to an Escalating Canada-U.S. Trade War The New York TimesCanada says it will match US tariffs 'dollar for dollar' as trade talks break down BBCUS-Canada Trade Talks Collapse, Triggering 50% Trump Tariffs Bloomberg.com