U.S. President Donald Trump’s trade policy may be chaotic and punitive, but he’s right about one thing: Canada’s agricultural supply management system has to go. Not because it’s unfair to America, though it is, but because it punishes Canadians. The price-fixing scheme limits consumer choice, requires a huge bureaucracy and prevents farmers from producing more in the face of shortages, forcing them instead to dump excess production. Worst of all, writes Gwyn Morgan, it drives up prices for milk, cheese, chicken, eggs and other essential foods — all for the benefit of a few thousand farmers, largely in Quebec. For Canada’s trade negotiators, argues Morgan, ending this mad racket should be job one.