DK,

       I'm curious as to when you think history has vindicated American nativism.  Was  it the mid 19th century campaign against the Irish, or the efforts to limit the Chinese railroad laborers?  Perhaps you think that the successful effort to slam the golden door shut on your own people in the 1920s and 1930s that was warranted?  

          Looking to Europe as a cautionary tale ignores the clear evidence that American Muslims are significantly better adjusted and integrated into American life than they are in Europe.  I don't see any reason why we can't keep the Abu Hamzas out while still providing an opportunity for those Muslims who want nothing more than to become full members of an open and free society.