Reese, do you have bank accounts together or joint assets? Photos of your life together? friends that you spend time with? Mortgage or rental agreements? Joint Auto Insurance and health insureance? Gather as much documentation that you can that your marriage is for real and make photo copies. It sounds like you are a legitimate couple even if it is not going well. In that case you CAN divorce and you can apply to renew your greencard based on the fact that your marriage was in good faith but it was terminated due to reasons out of your control. Your husband is wrong that he can take your green card away. US citizen husbands say this all the time to get what they want but it is not true. Good Luck!