First things first meet with an attorney
1. Gather ALL documents pertaining to your marital assets, children of the marriage and any other issues that you feel are pertinent.
Meet with an attorney
2. Depending on the state that you reside in, be prepared to get court ordered into mediation prior to any trial and/or divorce settlement.
Meet with an attorney
3. Going forward keep any/all communication with him via text/email only. Record all phone conversations. Documentation will be key. Hearsay will not suffice.
Meet with an attorney
4. Your spouse may try to hide assets/income from you. Its your job to stay on top of that.
Meet with an attorney
5. If you feel that he fraudulently used your marriage as a means to get his U.S. citizenship, contact immigration. Do be aware that anything you say can and will be used against you, and if there is any reason for immigration to suspect that you too were complicit in the fraudulent marriage, you could also be investigated and prosecuted.
b). Also remember that in order for your husband to get his initial immigration application approved, YOU had to sign an Affidavit of Support which was a legally binding contract between YOU and the U.S. government in which YOU agreed to financially support him as your non-citizen spouse.
Must meet with an attorney
6. Keep your children's passports in a safe lock and at from him. International parental child abduction is not science fiction. Don't let him flee with your children if the kitchen gets too hot for him. With help from your attorney, obtain a valid, enforceable court order that includes prevention provisions, such as restrictions on removing any of your children from the country.
Meet with an attorney
7. Can't stress how much more you need to quickly meet with an attorney. They will help protect you and your rights when it comes to child custody, child support, alimony, division of marital assets and how marital debt will be split, BEFORE he moves thousands of miles away. Him moving thousands of miles away will only complicate and make your divorce proceedings harder, especialy if he moves out of state. Act NOW!
Sorry you going through all of this. I know its easier said than done. Take care of yourself and your children. Try not to go through this without a lawyer. Can't stress the importance of that. Stop thinking about what he's done and pay more attention to what you should be doing for yourself and your son.