Agreed.
Just how would a no-muslime-entry be implemented? Does the immigration agent ask the traveler potential ISIS terrorist "Are you a Muslim?"? Remember taqiyya. Does the agent ask the traveling to recite some phrase from the Koran - and when he/she does, prevent entry? Just looking like a more workable plan is to prevent entry from muslime countries - and Cruz here is being only too restrictive, with just Syria and Iraq. It should be expanded to the 57 states.
Waah, can’t do, can’t do!
It’s not like similar ideological screenings have always been an utter flop (hint: look for GOOD guys and say yes, the rest are no).