Opponents from Washington state of U.S. President Donald Trump’s tariff threats against Canada are vowing to fight, saying the ongoing trade war has delivered a heavy blow to American border communities.

A slew of countries will face steep levies, including a 50% tariff on imports from Brazil and a 30% tariff on the European Union.

Canada is one of the United States' top trading partners, with more than $410 billion of goods crossing into the country last year.

The move injects fresh turmoil into a strained bilateral relationship as Prime Minister Mark Carney negotiates a new economic partnership with the United States.

Canada's retail sales shrank by 1.1% in May as consumers curtailed car purchases and spent less at supermarkets, convenience stores and on alcohol, data showed on Thursday.

Trump recently said he will impose a 35% tariff on Canada, the latest salvo in his on-again, off-again trade war with the U.S. ally and top trade partner.

President Donald Trump’s vows to roll out punishing new tariffs on Aug. 1 have barely made a ripple with investors who are convinced he’ll once again back down. But at the White House, officials insist they’re serious this time.

With one week left before the U.S. imposes a 50% tariff on Brazilian imports, President Luiz Inácio Lula da Silva sent another public message to U.S.