My son married Chinese woman from PRC. She got provisional green card based on their marriage, and is awaiting permanent green card. She came to US to learn English while he finished job in China. Wife cheated on him while she was in US and they recently separated. Wife is still in love with person she cheated on my son with, and will not break off contact, which was one of his conditions for working it out. He's broken up about it. Doesn't know what to do. Wants a divorce but she wants to wait until permanent green card in finalized. I think he is obligated to report the separation to Immigration. What do you think?Son is still in China and has moved out of the apartment they cohabited for 4 years. He has a job coming up, but intends to be back here in the states at the end of summer at the latest, possibly to attend graduate school. Will they have an interview with Immigration before permanent green card is given, and if so, can he tell them then about his break up? Or should he do it ASAP?