WASHINGTON (AP) — Under threat of trade retaliation from Canada and Mexico, the House has voted to to repeal a law requiring country-of-origin labels on packages of beef, pork and poultry. The World Trade Organization rejected a U.S. appeal last month, ruling the labels that say where animals were born, raised and slaughtered are discriminatory against the two U.S. border countries. Both have said they plan to ask the WTO for permission to impose billions of dollars in tariffs on American goods. The House voted 300-131 to repeal labels that tell consumers what countries the meat is from — for...