Guillermo Schulenburg started his priestly life almost inmediately after the infamous agreements between the Vatican and the government, a betrayal against the Cristero Army. Years later, before and after WWII, Germans were viewed with suspicion. German citizens had been expelled (especially those close to Roman Catholic groups and Nationalist organizations in opposition to the government). However, Schulenburg never got expelled, he was even promoted in the Roman hierarchy as he was known to be a hardcore "Anti Fascist", very close to the government.
At that time, the Romanist hierarchy ceased to oppose the government and the RC seminaries were filled with ambitious youngmen with government connections. They started to form their own organizations as pressure groups agitating for the replacement of older bishops and priests (especially "Priests for the People" founded by Sergio Mendez Arceo, who would become Bishop of Cuernavaca and which promoted a Rationalist thought and open collaboration with the government's "progressive" causes).
When he was appointed as abbot of Guadalupe's Basilica, Schulenburg got the Mexican TV to broadcast his liturgies and the government's tribune ruled the Basilica. Most sermons were about social issues and almost always coincided with the line of the official party's policies and thoughts. It was at this time when Schulenburg started to accumulate incredible wealth and receive extremely expensive gifts from politicians. In 1975, Communism succeeded again when the government announced that the old Basilica (a baroque temple) would be replaced with a modern building. It is rumoured that one of the architects who were involved in the project said that one of their ideas was to make the building not look like a church but as a temple dedicated to mankind. The chief architect, Pedro Ramirez Vasquez (a Marxist), also participated in urban projects on behalf of the Israeli government. You can check some of his monstrous creations on his website:http://ramirezvazquez.org/
The people who worked with Schulenburg were all Liberals, Rationalists and Pro-Marxists. Manuel Olimon, one of his collaborators is a well known historian. You can check some of his titles here (some of his books seem quite interesting, such as "Incipient History of Liberalism in the State of Mexico", for example):http://olimon.org/