We should not blur the lines between legal and illegal immigrants. Millions of people around the world have gone through the process to come here legally and they followed the rules that required them to pay a fee, learn English, and learn about American history and government.
I tend to get comfortable with the dialogue and find out who the person is in the script and try to hit that. People are sort of independent of their occupations and their pastimes. You don't play a politician or a fireman or a cowboy - you just play a person.