YES. Fine and no problem. Although to be Constitutional you'd have to make it all citizens of certain countries (which just happen to be Muslim or Muslim dominated)
2. All Muslims have 48 hrs to collect their personal papers and two suitcases worth of belongings. Report to the nearest FBI office for further instruction
NO deal. Arrest all the ones for which probably cause exists, grill for information on others, and then arrest them. Throw the book at all of them, no plea bargins, no reduced sentences. But, citizens have full Constitutional protection. If the government could violate that for them, they can do it next year for owners of "illegal assault rifles" (Or Bibles for that matter).
If the government could violate that for them, they can do it next year for owners of "illegal assault rifles" (Or Bibles for that matter).
Theoretically this is true but practically (as in the case of Communism), if the country becomes Islamic, the government will become Islamic and the whole point will be moot ...