ARTICLE ABSTRACT: In this article, recent changes in the Mexican research system are examined. The restructuring of the global political economy and a severe crisis of legitimacy in the Mexican political system have generated a turn toward neoliberalism by the ruling party in a bid to attract foreign investment. A key component of neoliberal science policy is the Sistema Nacional de Investigadores (SNI), a system of salary increments for selected researchers instituted during the 1980s. Examination of SNI's decisions reveals numerous discriminatory and self-serving practices that are inconsistent with widely accepted norms in the scientific community. During the same period, repressive actions against researchers, such as the peremptory closure of research institutions, firings of research ers, and direct intimidation, have increased. The victims of discrimination and repression documented here are disproportionately foreign-born Mexicans, leftists, critics of the ruling party, and researchers in environmental and energy studies.