Legal language (legalese) is a separate language... in America, anyway. It is the language of government and the courts. It looks like English, and it is similar to English, and within itself it might even be called English, but if you are not a judge or attorney in court, you don't speak or write legalese, even if you write all kinds of court cases and codes and statutes.
The language you are writing and speaking is common language. Some of it is almost exactly the same as legalese, but if you are not an attorney, judge, or other member of the BAR Association, it isn't legal language.
In common language, there are no illegal immigrants. Neither are there any undocumented ones. There is common talk that says there are both. But the talk is only talk, because common law has no authority to make anyone legal or undocumented except that it goes through the legal process.
There is only one way to remain in common law while you use the legal process. That is through the federal (often United States) district courts, which are found in every state. When you present your claim in any of these courts, in the format of "In Jon Doe's (you being Jon) court at such and such federal district court," only then can you operate with any strength at (not in) any of their courts. But you still have to stay in your court, and not give yourself over to their jurisdiction.
You stay in common law by using a jury made up of common people. You never let the judge do any legal prescribing, and certainly not judging. The jury is the judge. The jury is the tribunal. The judge is only a magistrate... a referee.
A guy named Edward Johnston said it like this on facebook, but he probably wasn't saying it legally:
No statutes, cops, lawyers, or judge that is anything more than a spectator, a referee
Amendment VII
In suits at common law, where the value in controversy shall exceed twenty dollars, the right of trial by jury shall be preserved, and no fact tried by a jury, shall be otherwise reexamined in any court of the United States, than according to the rules of the common law.
Did you catch that yet? In suits at common law...according to the rules of the common law.
All federal courts are Article III courts under the Constitution.
All federal courts are courts of record.
All state courts are common law courts.
In other words, if you don't give them the authority, you are in common law court, not civil legal court. But they are shrewd. They will pull you into their jurisdiction if they can get away with it.