The biggest flaw in the American system is its power-hungry judiciary.

The US banned entry to Communists for years; most Communists may have been nice, peaceful people, but all it took was a small minority who took the Communist Manifesto’s call to violence literally.

Perhaps most Muslims ignore or try to explain away the Quran’s violent instructions, but experience shows that some do not.  It’s foolish to allow entry to Muslims unless they renounce their religion.  But I agree it’s not fair for non-Muslims from these countries to be excluded.