Trump Militarizes Mexico

In return for having the tariff “indefinitely suspended,” Mexico has agreed to militarize the country using Mr. López Obrador’s newly created National Guard, which is under military command. The effort will start at the southern border, though where it will end is anybody’s guess.

Mr. Trump has claimed victory in his tariff gambit. But it’s unclear how effective the promised troops will be at stopping migrants. The main causes of the crisis are liberal U.S. laws and procedures for claiming asylum, which attract migrants from Central America and other places. Congress has refused to pass reform. But markets work, as more than a half-century of a failed war on drugs proves, and the wild Guatemalan border will not be easily sealed.

.. Meanwhile, AMLO, as the Mexican president is popularly known, also won, though insidiously. The career politician with an authoritarian bent is a backer of Venezuelan dictator Nicolás Maduro. Since taking office in December, he has been cozying up to the military. Now he pockets more power, and with the blessing of Washington. This is a setback for the rule of law.

President López Obrador initially had very high approval ratings. But they began falling when Mexico’s economy slumped in the first quarter, and his attacks on the press alienated even some of his most ideologically sympathetic constituents. Mexicans who were worried about the strongman instincts of their socialist president gained hope that the slowdown would force him to exercise greater restraint.

Then came Mr. Trump’s May 30 threat, and Mexicans rallied behind their president. A poll by the Mexican daily El Financiero last week found that “84% of Mexicans believe that, faced with pressure” from Mr. Trump, “the country should remain united and support” AMLO.

Mr. López Obrador knows how to play politics. In the earliest months of his presidency he encouraged the migrants before taking a more practical stance. In the face of standard Trump hyperbole about Mexico, he calmly sent a delegation to Washington to negotiate. His base is praising the deal, though had it been sealed by an AMLO opponent they would have vigorously denounced it. His opposition is happy because free trade is saved.

An AMLO rally Saturday in Tijuana was originally billed as “an act of unity to defend the dignity of Mexico and in favor of the friendship with the people of the United States.” After the two sides came to agreement, it was changed to a “celebration” of the deal—and of the new life that Mr. Trump breathed into AMLO’s presidency.

..  Blowing up the North American economy to solve the migration crisis never made sense. Before the North American Free Trade Agreement, the average tariff for Mexican goods entering the U.S. was only 4%. Twenty-five years later, North America is a highly integrated productive colossus that depends for its efficiency on seamless cross-border supply networks.