This questions is somewhat complex depending upon your desire to continue assisting with his immigration situation. You may need to consult with an immigration attorney. Please let us know if you need a referral to one of our trusted sources. The divorce aspect is really very simple and you can with notice by publication and default if he doesn’t respond. Of course, if children are involved it gets somewhat more complicated but those issues can all be flushed out during a consultation. Please let us know how we can help.