I'm a Brazilian national that was married to an American. I also had a two-year green card. It turns out he was married before he and I got married, and they never got divorced (I was unaware of the prior marriage, he was aware and never told me), so a state of bigamy was established, and thus my marriage to him, in immigration's eyes, is null and void. My question: has anyone here ever come across this type of situation? I'm trying to find a case where this has happened, preferably in California, where the immigrant was granted a green card, in order to establish precedence.