President-elect Trump suggested to Canadian Prime Minister Justin Trudeau last week that if a tariff for failing to address trade and immigration issues would kill the neighbor to the north’s economy, maybe it should become the 51st state, sources told Fox News.

Last Friday, Trudeau flew to Mar-a-Lago unannounced after Trump threatened to impose sweeping tariffs on Canadian products. Specifically, Trump is threatening to impose 25% tariffs on Canada and Mexico over their failures to curb the flow of illegal immigrants and illicit drugs from those countries into the U.S.

Now, new details are beginning to emerge about the meeting between the two men, which Trump called "very productive."