The presence of the conservatives in Mexico, and their main characters, is long-standing. In Mexican history, some of the conservative movements have been present in religious thinking, especially in Catholicism, e.g., the quick departure from socio-cultural and political Mexican spaces as a consequence of the evangelical Spanish process, whose roots come from the XVI century Of the population in contemporary Mexico (7.7% belong to Catholicism, 2.5% to Evangelical Christians and Protestants, and 2.5% to non-Christian groups, while 8.1% do not follow a religion. Catholicism has a significant presence and influence on different forms of belief and practice in daily life in Mexico. This paper aims to highlight the role of the conservative movement called Frente Nacional por la Familia. It presents its history as the heritage of other conservative movements in Mexico, the stages of its formation, and the agenda and intervention in public life. The methodological approach is qualitative, using multi-situated ethnography. The results allow us to visualize the construction of the public agenda with legislative strategies that have operated with relative success and national presence, obstructing the progress of the proposals of feminist groups and sexual diversity and the defense of a national and cultural project that has as one of the symbols the traditional family.