There are means to manage and monitor immigrants. There are books about it. One can make immigrant shops obvious to the public with symbols. Special schools only for immigrants. Special purity laws and employment rules. Dynamic work complexes with security gates. The cheap labor there would enrich investors. Last but not least, special passport restrictions and exit fees and laws would make a profit.

No outsider would run toward a freedom that imprisons immigrants for getting in and getting out.

Sorry I think I over excited Ake.