“Laws,” we said,
are made for the government of actions, and while they cannot interfere with mere religious belief and opinions, they may with practices. . . . Can a man excuse his practices to the contrary because of his religious belief? To permit this would be to make the professed doctrines of religious belief superior to the law of the land, and in effect to permit every citizen to become a law unto himself.”

Based on this precedent, the Bishops of the Catholic Church, do not have to practice contraception on themselves, but should allow it’s use among all others.