For every immigrant involved in violent or drug related activity, there is one, if not more who isn't.  My logic tells me there are two basic problems:  Illegal immigration, which should be dealt with harshly, and is the one thing I agree with the Trumpians on, and criminal behavior by either legal or illegal immigrants.  But "criminal behavior" has nothing to do with nationality.  Neither, if you believe the stats, does illegal immigration.  That's why the travel ban makes no sense as to non-criminal immigrants.  That is the dilemma confronting us as a nation.  There is an element in our nation that says that ALL individuals of certain nationalities are criminals (or terrorists).  That simply is not true.  A more finite thinking is that all members of a certain religious belief are criminals (or terrorists).  Also not true.  So, "not true" rationales are being used in an attempt to exclude certain nationalities.  "Not true" rationales are easy to come by.  Your nationality is next.