Sorry but having seen it happen they merely tell them they are not allowed in. Why get all involved in all the deportation chit when it is not required.
From report:
Of the 151.834 removals of individuals without criminal convictions 84 percent or 128.398 were apprehended at the border while attempting to unlawfully enter the US..
Another good reason to scrap this idiotic & sick Prison Industrial Complex.
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I don't know half of you half as well as I should like, and I like less than half of you half as well as you deserve.
- Mr. Underhill