You're missing that despite not knowing how the law works, Republicans have railed that churches offering sanctuary are "harboring" fugitives of the law. It must be clear to you now that there is some element of the crime of "harboring" that is missing when these churches do this; therefore, it is not illegal "harboring." What's missing? The concealment aspect. These churches are making it well known that they are doing this; thus, there is no crime. Never trust a Republican to know much or to keep it honest.