It has been tried many times before.
Historically, when the state has sought authority over the church, the leaders will do it in the name of this religion or that..but it is always the state that is exerting the authority. Thus the horrific bloody persecutions of the past are a result not of Christianity attempting to establish itself (this is what our school children come out of school believing, based on the half-formed claptrap they hear from their illiterate teachers) but have been a result of a state body exerting force over the church.
", Soviet authorities suppressed and persecuted various forms of Christianity to different extents depending on the particular era. Soviet policy, based on the ideology of Marxism-Leninism, made atheism the official doctrine of the Soviet Union. Marxism-Leninism has consistently advocated the control, suppression, and the elimination of religious beliefs.[1]
The state was committed to the destruction of religion,[2][3] and destroyed churches, mosques and temples, ridiculed, harassed and executed religious leaders, flooded the schools and media with atheistic teachings, and generally promoted atheism as the truth that society should accept.[4][5] The total number of Christian victims of Soviet state atheist policies, has been estimated to range between 12-20 millions.[6][7][8]
Religious beliefs and practices persisted among the majority of the population,[4] in the domestic and private spheres but also in the scattered public spaces allowed by a state that recognised its failure to eradicate religion and the political dangers of an unrelenting culture war."
Persecution of Christians in the Soviet Union - Wikipedia, the free encyclopedia
Of course, nobody has ever done it so well as atheists.