What about that oil money? We need to find alternatives to Arab oil very quickly.
You are barking at the wrong tree. Large part of Arabs in United States are Arab Christians who fled from Muslisms. They are the descendents of original Middle Eastern Arabs who were Christian before Muhhamad was even born. Some of them are Orthodox (like Greeks and Russians) some of them are Roman Catholic (like Lebanese Maronites who are in union with Rome).
Very feasible and well within all Constitutional rights.
However, you'll be doing away with:
90% of taxi cab companies,
80% gas station/convenience stores
100% of medical services/hospitals
100% of the electronic industry
100% of colleges
99% of auto industry
ahh.... you get the idea?