Trump’s misguided belief that inside of every Canadian there is an American waiting to get out is a misconception that is actually older than the U.S. itself. Its history, however, offers a cautionary tale for Trump because it has been responsible for some of America’s most humiliating foreign policy failures.

Unless nothing changes, President Donald Trump’s threat of imposing 25 per cent tariffs on Canada will come to fruition on Tuesday. Barring last-minute negotiations between Trump and Canadian Prime Minister Justin Trudeau,

The president is increasingly threatening other countries with tariffs for issues that have little to do with trade.