Mexico goes to the polls this Sunday to choose its next president. Barring a last-minute surprise, the winner will be Andrés Manuel López Obrador, a populist candidate who has sometimes styled himself as a foil to Donald Trump.
Among the losers may be a bipartisan, multi-decade success story: steadily improving relations between Mexico and the U.S.
Though Americans often forget it, the relationship between Mexico and the U.S. is rooted in rivalry. “Poor Mexico,” the longtime dictator Porfirio Díaz once reportedly remarked. “So far from God, so close to the United States.”