At first, I just heard something like a joke that he got his green card through a fraudulent marriage, and I didn't think it's true. But not long ago, I had a chance to see his income tax return because my job need me preparing copy for his bank loan. He files his tax with another woman married jointly for at least the latest two years. I was shocked that it isn't a joke. I want to know whether I must report it? If I don't, am I an accessory? If I must report, how to do? What if after I report, he already divorced?