So, what are you going to do if you’re a Social Security employee ordered to implement a blatantly illegal order? Pretend that if the President orders it, that it can’t be that illegal? Try to drag your feet? Tell yourself that you only have a small role in the process so what you do doesn't matter. Refuse to be concerned about it since you have no non-citizen friends or family? Implement the order because you like the policy even if it's illegal? Refuse to implement the order and get fired? Quit your job so you don’t have to implement the illegal order?
In general, I have enormous sympathy for Social Security employees but on this I expect that few of you will have the courage to quit or court firing. Prove me wrong but I can hear you now. “I’ve got a family to feed.” “Refusing to implement the illegal order will do no good. If I don’t do it, someone else will.” “I’m not a lawyer. I don’t know what the law is.” “I was just following orders.”
I doubt this exact scenario will happen but somewhat less dramatic illegality is almost certain. Trump is already saying he'll end citizenship for children born in the U.S. to parents who are in the U.S. illegally. That's a clear violation of the 14th Amendment. The obvious first step in ending birthright citizenship would be to deny Social Security cards to children born in the U.S. to those present in the country illegally. Would you want to implement a cruel policy that's clearly illegal?