They are called "coyotes" They work for the drug cartels who completely control the boarder. This has been a great business for them. It's estimated that a million illegals have crossed this year. At $10K each, that's a billion dollars for the drug cartels and much less risky that smuggling drugs.That is right of course. I am not sure about the definition. But is it legal the people facilitating them crossing borders illegally. What is the term for that then ?