Ten years of debates over democratic backsliding have failed to produce many examples of independent institutions thwarting authoritarian attempts on democracy. Yet Latin American courts seem to be countering this larger trend. The three largest countries in the region—Brazil, Mexico, and Colombia—have produced robust institutions able to check leaders with authoritarian tendencies, with high courts playing a fundamental role. In a dramatic succession of recent cases, courts in these three countries have been innovative, acted with a high degree of independence, and appear legitimately interested in defending democratic norms. All of this is profoundly surprising. There is little to no track record of independent Latin American judiciaries that stand in the way of authoritarian governments. Closer study of these three countries is therefore critical for scholars and practitioners, who are otherwise locked in debates over the importance of judicial review in preserving democracy. After dozens of judicial reform failures since the 1990s, we may be observing some overdue success. It appears that 1990s judicial reforms are making a comeback in Latin America.