Immigration Law Questions? Ask an Immigration Lawyer.
HelloThis is Samuel. If you are divorced then no you are not responsible for her. You can report her to USCIS if she has been convicted of a crime of moral turpitude. But there is no other basis for you to have her deported.Have you a court ordered visitation schedule to see the children?
You can report the firearms in the home, but only the husband will get in legal trouble. She is allowed to own firearms, as long as she is not herself a felon and she has made the purchases legally. But he is not to be in or near any and can be charged with "constructive possession" if you call the police and tell them this known felon lives in a home where there are guns.
I suggest, it is not a style of living that I would condone. But it would only be a crime if they are in some way defrauding the state on the assistance.
You can always file a modification to change the custody order.
You only need to show that you would be a better provider for the children.
And that the Mother not being employed, living on state assistance is harming your children. You can file that on your own, if you don't want to use a local attorney.
I wish there was more you could do.