Better read your Constitution pal. It contains NO prohibition against prosylitizing. Nor does it contain words requiring separation of church and state. It DOES contain words prohibiting government interferance in the practice of religion.
"It DOES contain words prohibiting government interferance in the practice of religion."
Which prosylitizing is. The government cannot promote a particular set of religious beliefs. It CAN accomodate the religious beliefs and needs of it's citizens, by providing government-paid chaplians, for example. Those government-paid chaplains prosylitizing IS government interference in the practice of religion. Because some may construe it as positive interferrence makes it no less an interferrence and not constitutional, IMO.