Actually what's most ironic here is that compared to what Mexican police would do to foreign criminals south of the border, this sick-stick is like getting rubbed in the face with an elmo doll."I would imagine that Mexico wouldn't be particularly happy with us using a device that would be more appropriate for criminals, not just for people trying to get across the border who are looking for better opportunities."
The only actual danger is that you don't want to induce vomiting in someone who's likely dehydrated from crossing a border that's situated along a pretty arid stretch of land (which is the case for a good deal of the US/Mexico border).
XI Wiki

