Immigration from Mexico

In response to my post on immigration, MOJ reader, Chuck Roth, reminds us that currently "there is no 'line' for a poor Mexican without either (a) a close relative who was a US Citizen or green card holder, who could apply for them, or (b) a preexisting job offer (kind of tough to get if you're from some little village in Mexico) from a company that pays the prevailing wage in the community..."