That's the definition of due process. You cannot restrict a person's rights unless you have PROVEN, beyond a reasonable doubt, that they are guilty of a crime. Suspicion is irrelevant. There's no due process for ending up on one of these lists. There's no trial and no appeals process. You can get thrown onto one of these lists and never come off. That's not Constitutional and it's not ethical. The guilty have committed crimes. The under-suspicion have not (if they have, then prove it). Until someone is convicted in a court of law they are assumed innocent. That is the standard of justice in this country and for good reason. Stop restricting rights because of suspicion. Justice requires a higher standard than your hunch.