A feud is beginning to bubble between Canada and the United States. Doug Ford slammed Donald Trump during his daily media briefing on August 7 after Trump recently announced that the United States would be reinstating a 10% tariff on Canadian aluminum. Ford made no attempt to hide his disappointment at the decision.\nIn fact, he went quite the opposite direction, going on the attack on Friday.\nHe called President Trump a “backstabber” and vowed that Canadians will “kick America’s butts” by boycotting U.S.-made products.\nEditor's Choice: Canada's Salmonella Onion Situation Is Growing With Another New Brand Recalled\n“I’m a businessman, I would never go after my number one customer and slap him in the face like President Trump did to the Canadian public and Ontario,” Ford continued.\n“We will come back swinging like they’ve never seen before.”\nThe tariff will come into effect on August 16.\nPrime Minister Justin Trudeau and Deputy Prime Minister Chrystia Freeland also addressed the issue in an announcement on Thursday evening.\nFreeland stated that Canada "intends to swiftly impose dollar-for-dollar countermeasures."\nThis isn’t the first time in Trump’s presidency that tariffs have been placed on Canadian goods.\nThey were introduced on steel and aluminum in 2018, but, after much negotiation, were later removed as part of an ongoing free trade agreement.\nAccording to CBC, Canada responded with over $16 billion in their own levies on a variety of American goods.\nThe Canadian government announced on Friday that it would hit back with $3.6 billion in countermeasures.\nThis also isn’t the first time Ford has expressed annoyance at the U.S. leader during the COVID-19 pandemic.\nAfter Trump announced he would no longer be sending N-95 masks to Canada, Ford responded by saying: "I can't stress how disappointed I am with President Trump for making this decision."\nTrudeau has also been slow to begin talks on opening the U.S.-Canada border.\n"We will always stand up for our aluminum workers. We did so in 2018, and we will stand up for them again now,” said the prime minister.