Exactly. Even if he signed on as crew on some tramp freighter it takes money. Someone wanted this guy in the US enough to support him for the months it took to get here.
I still say put up warning signs. Then Shoot to Kill. You will have to do this only ONCE and the word will get out.
...and I know from my sources that INDIANS, PAKISTANIS and BANGLADESHIS pay anywhere from $40,000 up to $80,000 to get to The United States.
I don't think they are spending that kind of money to come here, be AMERICANS, and contribute and enrich our society.