One common sense rule would be to start by excluding men of military age, or say even 14-40, who were not accompanied by women and children. That alone would cut the numbers to be screened and processed by about 90% or so.
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Why let any unaccompanied men in at all ???
A 45, 55, 65 yo man can kill you and be here with intent to kill you and your children just as determinedly as a younger man...
A moslem man doesn’t lose his ability or desire to kill all Jews and Christians just because he has reached the age of 40...
Plus with his experience and knowledge of weapons and bombs etc he can train and send out cells of other younger men to kill too...
I concede you have a good point. A goodly share of Muslim men are moral cowards and the desire to kill doesn’t diminish with age, only the desire to also kill themselves in the process.
Furthermore, an older Muslim man could come over here and then try to marry a 13-year-old girl, and try to get it approved by one of our whacko judges on the basis of his religion.
These cowards should either emigrate as a family (as a lady resort), or stay and fight!