Whatever makes you sleep more comfortably at night on your bed of ignorance. Now that I've proven my point, that you are too lazy and uninterested in learning to even look up an article on Wikipedia, I'll provide the quote from the footnotes for you:
Don't try to say that Wikipedia is a spurious source, either, because the exact same quote is in the Congressional Globe, which is a verbatim transcribed record of the congressional business of the day of the debate, May 30th, 1866. The further discussion in the Congressional Globe makes it obvious that the Chinese workers were in fact undocumented workers, not that anybody doubts it, other than you.
Furthermore, from the article you were too lazy to actually read:
Incidentally, I have no vested interest in educating you. It's far better for me if you stay ignorant and continue to embrace wingnut ideas that
embarrass the other conservatives. That way, more moderate conservatives will desert in droves and swing towards Democratic candidates in the fall.