Tariffs already exist. For example,
2022 Canadian Tariffs on The United States
https://wits.worldbank.org/tariff/trains/en/country/CAN/partner/USA/product/all
2012 Canada Customs Duty Rates, Tariffs and Taxes
https://www.crossbordershopping.ca/duty-tax-import-guide/canada-customs-duty-rates-tariffs-and-taxes