She can also consular process for the immigrant visa once your I-485 is approved.

It seems to me that if she has not been arrested or criminally prosecuted, that she has not been arrested or convicted either.

If there is nothing for them to do in the U.S. because they are afraid to travel, I do not see any valid reason to extend their stay in the U.S.

If you have been a permanent resident for over six months you can work for any employer you wish.

Generally it is not difficult to get married. You can go to your county department that deals with marriages and get your marriage registered.

Check the visa bulletin at https://www.uscis.gov/visabulletininfo

Honestly the chances are close to zero. But in theory you could apply for a waiver based on hardship, or fear of persecution,

He can apply for a tourist visa if he wants to come to the U.S. Perhaps he wishes to take part in the divorce proceedings.

Yes, it is possible that you will not get caught.

If the employer asks you, you should provide it. The employers failure to maintain their I-9 files is none of your concern and has no impact on...