Canada on Sunday began imposing tariffs on $12.6 billion worth of American goods like ketchup, pizza and iron in a tit-for-tat retaliation for President Trump’s slapping fines on steel and aluminum imported into the United States, according to reports.

​Trump placed the ​25 percent tax on steel and 10 percent on aluminum on June 1 against American allies Canada, Mexico and the European Union.

​In retaliation, Canada slapped 25 percent tariffs on steel and iron, while hitting 250 other US goods including maple syrup, dishwasher detergent, coffee beans and strawberry jam with a 10 percent penalty, the Associated Press reported.

​The Trump administration said Canada was a national security threat because of the imports even though the country is the US’ second-biggest trading partner behind China.

Speaking on Canada Day, marking the country’s 151st birthday, Prime Minister Justin Trudeau mixed tariff talk with birthday wishes​.

“This is who we are, we’re there for each other in times of difficulty, in times of opportunity. We lean on each other and we stand strong and that’s what we do from coast to coast to coast,” Trudeau said​ during a visit to ​Leamington, Ontario, known as Canada’s tomato capital.

​The town is home to a food-processing plant that supplies tomato paste to French’s, a competitor of Kraft Heinz. ​

Mexico and the EU have already imposed a number of tariffs on American goods, including on Kentucky bourbon, Wisconsin-made Harley-Davidson motorcycles and Florida orange juice.