She has a US passport at this point, hard to revisit whether she was in the US illegally or not. I do think it has been established elsewhere that her parents were here illegally, that Kamala is an anchor baby, neither of her parents were US citizens, so therefore Kamala is not a natural born citizen. Unfortunately, no one has standing Apparently to challenge whether she is legally able to assume the office of president.
All US a passport requires is a US birth certificate.