The Catholic clergy and the military have played crucial roles in Mexican history yet have been largely ignored in recent twentieth-cenury scholarship. The military received some attention in the early post-revolutionary period because it was intertwined with political leadership, but religious elites and the Catholic Church, which were separate from the state and suppressed by it, have not been analyzed. As a rule, cohesive leadership groups in Mexico with values differing from politicians, strong institutional structures, and autonomy from the state have rarely been examined, especially in relationship to the state and politics in general. Conversely, the greater a group's ties to the Mexican political establishment, as measured by exchanges between leadership, the more scholars have learned about that group. Whereas intellectuals, entrepreneurs, military officers, and even opposition politicians share some ties with the state, the Catholic Church has no direct links, and its contemporary leaders, goals, and institutional structures remain relatively unknown and little understood.