Said this for years an nobody agreed.
Our immigration and naturalization folks are just plain lazy as a department. Seems like it is a political appointment to payoff a supporter. Those folks have the resources, and the help from other departments to keep track of our visitors. There are some departments that could do a better job keeping the flow of illegals from getting in. I doubt you would eve stop it.
Should be no trick whatsoever to keep track of em though, Seems like if they don't know how the Ag. folks could give em a few helpful hints.
I guess i'm saying I agree with ya.
Blessings