Despite Trudeau and Goodale's  assurances that all such people will receive thorough vetting and  all efforts are being made to keep bad people out, I remain susceptible.  Those crossing the border at 3 AM seem determined  to not be caught so as to avoid benign vetted at all.  I  suspect they have people arranged through mosques and Islamic  groups waiting for them at the crossing point using cell phone GPS to locate them.   Without their cell phones, the European Muslim invasion would not have been possible.