Divorce and remarriage after immigration

Just go back to the mainland and get a marriage certificate, because the man is not in the United States, so he can't register in the United States. . In addition, did you become an American citizen when you immigrated to the United States? If you become an American citizen, you are an American citizen. If you are a foreigner in China, you should go to the American Embassy in China to get a single certificate. If you just get a green card, you can go directly to the China Civil Affairs Bureau just like your first marriage. )