The political winds in Latin America are changing. The right-wing governments of Jair Bolsonaro in Brazil and Mauricio Macri in Argentina may be giving way to left-leaning alternatives. Potential victories for Luiz Inácio Lula da Silva in Brazil and Gustavo Petro in Colombia later this year are generating talk of a new “Pink Tide.”
In Argentina, Mr. Macri’s 2019 loss to Alberto Fernández and his Peronist coalition has been followed by political and judicial investigations into the former, now that the levers of the state are under the control of Mr. Macri’s rivals.
One such probe concerns Argentina’s...