WASHINGTON—The U.S.-Mexico-Canada Agreement kicks in Wednesday, but the culmination of years of negotiations won’t necessarily mean the end of trade tensions among the three North American nations. Even as the deal formally takes effect, contentious issues that prolonged the negotiations are re-emerging as sore spots—including U.S. tariffs on metals, Mexico’s labor standards, Canada’s protection of its dairy market and new rules on automotive production.

Source: Wall Street Journal July 01, 2020 12:04 UTC