[staytrue]

I don't know how anyone can do a valid study on the economical impacts when they can't even say for sure how many are actually here.

I think you meant to say "I don't know how anyone can do a valid study on the economical impacts when it disagrees with my opinions."

[SouthTexas]

No, I meant what I said. May not be as eloquently put as others, but the point is clear. Without knowing the total of anything, how can you weigh it's impact?