In this June 29, 2017, file cows stand in stalls at Mystic Valley Dairy in Sauk City, Wis. President Donald Trump has a point when he lambastes Canada for protecting its dairy farmers with hefty tariffs. But the United States is hardly innocent when it comes to farm protectionism. And the very real difficulties that U.S. dairy farmers face can't all be blamed on America's neighbor to the north. And in fact, despite Canada's tariff, the U.S. runs a surplus in dairy trade with its northern neighbor. AP Photo/Carrie Antlfinger, File