Donald Trump lobbed a fresh taunt at Canada as Prime Minister Justin Trudeau tries to weather a crisis sparked by the sudden departure of a minister who was a bulwark against the US president-elect’s plan to start trade wars with his neighbors.

The government has pledged a joint "strike force" and 24/7 aerial surveillance, as well as a host of other measures.

The federal government is promising a suite of measures to disrupt the flow of fentanyl and strengthen 24/7 surveillance of the Canada-U.S. border — including outfitting the RCMP with helicopters, drones and mobile surveillance towers and creating a new "strike force.

The prime minister has been facing growing calls to step down following the resignation of his finance minister on Monday.

Ottawa is promising to crack down on illegal immigrants from crossing into the U.S. from Canada to appease incoming president-elect Donald Trump. UBC Professor Irene Bloemraad breaks down the new border restrictions and what impact they could have on stemming the flow of migrants.

Trump said that on his first day in office, he would place 25 percent tariffs on all Canadian and Mexican goods. The two countries are the leading sources of U.S. oil imports.