President Donald Trump halted trade talks with Canada over the ad, which was paid for by the Ontario government and featured Ronald Reagan criticizing tariffs.
He reported on conflicts and disaster zones from Mexico to Lebanon. "Rarely in a career do you enjoy a task that is so solitary and intense," he wrote.
Reluctance to do business in the U.S. after a massive Hyundai immigration raid could make it tougher for South Korea to fulfill its pledge of $350 billion in U.S. investments.