Canada’s Mistake Was Believing the Border No Longer Mattered

Studying medicine is a notorious grind, involving complex courses, gruelling on-the-job stints and exacting standards. For Phil, a future Canadian doctor, it also meant sleeping in his car. As the Windsor, Ont., native toured the United States completing clinical rotations — the final requirement for his medical degree — a surprising reality kept him from securing accommodation. His rent money was being gobbled up by a voracious online gambling habit. Wagering huge sums on sports and blackjack with his cellphone over a stress-laden four years, Phil racked up $400,000 in losses. He...