From what I've read (and quoted above), it isn't illegal to give the 'undocumented' bank accounts, loans, or credit cards.
Besides, entering the US is a misdemeanor and not a felony.
Is it a great idea to insure these accounts via FDIC? No..
Is it a great idea to maintain a large % of the bank loans on undocumented individuals? No...
That said, do you really think all the illegal aliens in this country currently are going to be sent home? We might as well start integrating them into our society now because there is no way, no how we can 'round them up' and send them home without massive political/social/humanitarian repercussions.
I began the discussion in regards to BoA going under, mostly because they were willing to take on 'undocumented workers' banking needs. I have sympathy for them, NOT for the bank, and my sympathy isn't expressed in having to pay for the bank's idiotic move to become a charity.