South America's rightward political shift will deepen countries' security cooperation with the United States and attract selective U.S. private investment to strategic sectors, but it will not result in a larger supply chain realignment. Since late 2023, pro-business governments have taken office in Argentina, Bolivia, Chile and Ecuador, and still others will take office in the coming weeks in Peru and Colombia. Although commonly referred to as part of a single right-wing shift, these administrations do not share a single ideology, nor are they part of a unified regional movement, as they differ on economic doctrine, the pace of reform and social policy. Still, these governments have similar pro-business agendas, back stricter security policies and are in broad alignment with U.S. President Donald Trump's administration. In addition to ideological affinity with Washington, these governments all came to power in part due to voters' demands for stricter security measures, which align...