President Donald Trump has pushed into new trade law territory with an emergency sanctions law to justify punishing 25% tariffs on Canadian and Mexican imports and an extra 10% duty on Chinese goods to curb fentanyl and illegal immigration into the U.

Trump signed executive orders to impose tariffs on Mexico, Canada and China under the International Emergency Economic Powers Act (IEEPA), with a White House fact sheet claiming the move is meant to hold the US’ largest trading partners “accountable to their promises of halting illegal immigration and stopping poisonous fentanyl and other drugs from flowing into our country.

Canada will set its own tariffs against US goods in retaliation to broad 25 percent tariffs President Donald Trump announced Saturday on Canadian imports. Prime Minister Justin Trudeau announced a 25 percent tariff on a total of C$155 billion worth of American goods — C$30 billion of that on Tuesday when Trump’s tariffs go into effect,