Canadians are boycotting the United States in record numbers thanks to President Donald Trump. That boycott by our northern neighbors has cost $3.3 billion in tourism dollars to the U.S., according to a new report from the Canadian government. Visits hit rock bottom in July, falling more than 30 percent year-on-year for the first time since the months following 9/11 terrorist attacks. "The resulting 11-month streak of year-over-year declines was the deepest and most sustained on record for border crossings from the United States," the report also noted.