Read the story of the Edmonton Muslim man, kicked out for criminal activity, returned to Pakistan, changed his name, grew a moustache and quickly returned right back to the same Edmonton restaurant where he worked before.

Of course the restaurant owner, who sponsored the little darling BOTH times, knew nothing about this: until he got into a pay dispute with the fraudster, then shazzam, suddenly he looked familiar and the owner squealed on the immigrant. 

Canadian immigration officials floated a story about how the system worked when facial recognition software positively fingered the guy: after he had slipped through the tight security net for a few years though.

We know nothing about these third world  immigrants or refugees. Their real names, their credentials. Not even their birth dates.

We need to have genetic typing of these people, we need to know where their families are.

They don't like it? Can't do it? Too much like Big Brother? 

Fine. Don't come.