If you can't tell whether you adore or abhor a person without researching his immigration file, you have different values than me.
There are many other examples in which your same reasoning could be applied. A contractor has a valid license one day and the next day it expires. If this contractor does work on a person's house after his license expires, he is violating the law, even though intrinsically he is the same person he was before his contractor's license expired.
The same can be said of doctors, nurses, attorneys, engineers, dentists, bus drivers, taxi drivers, or anybody else who needs to have a valid license of some type in order to legally work in their chosen field.
Would you say that Dr. Smith is one of the finest surgeons in the nation when he is in Ohio, the state where he is licensed, but is an incompetent butcher if he happens to be in a state where he is not licensed?
Is a prostitute a fine mother while in Nevada but an unfit parent when the family visits relatives in California?
Do you believe that illegals are diluting our culture when they speak Spanish but people with visas are not diluting our culture when they speak Spanish?
Do only the illegals have anchor babies, use emergency rooms, have children in bilingual school classes, send money back to families in Mexico, and listen to Spanish language radio stations; whereas legal immigrants do not?
I'd prefer to judge a man by the content of his soul than the color of his immigration file.
Papers please.
Bad argument on so many levels. If he knows his permit is off and knowingly continues work, he is NOT the same person. He has knowingly decided to break the law and there are many consequences of that a act. Insurance risks kick in, if he is caught the project will be abruptly ended, and other bad things may accrue not just to him but to the people he is working for, with and who may be working for him.
You are partially correct that a person who has decided to deliberately break the law and thus steal from a sovereign country is an evil person. Getting amnesty makes them no less evil -- just lucky.