My brother is married to an illegal woman and they have 3 children and yes I do not like her. The children are my brother's life. He lives for them. Recently my sister-in-law became friends with a very good friend of mine w/o her knowing it. My friend is heavily in the party scene where we live and that is where she met my sister-in-law. I have found out through my friend after realizing who she was, that my sister-in-law plans to divorce my brother as soon as she becomes legal. She talks horribly about my brother and has several boyfriends. My friend even proved it to me by bringing my sister-in-law to her house with friends and they talked about it while I was in the next room. If I showed my brother the video evidence we have then he would definitely get a divorce, but he would have course lose custody of the children, even though she is illegal. So divorce isn't the best answer. I am looking for more where he can keep his children.

I know for a fact that my sister-in-law has a fake social security card that is actually from a "real" girl stolen in California by my sister-in-law's cousin at the dentist shop he works at. I have gotten the SS # and looked it up and it does belong to a pre-teen girl in California. My sister-in-law uses the same name on the card as her name at he job so when if there ever is a check made on her card when she starts employment or whenever, it comes up as legal.

Can I use this information to get my sister-in-law deported and how? What steps do I need to take to get this done?

YOU can't get anyone deported. You CAN report violations of the law to the appropriate authorities and then see what action they take.

Though, isn't it a felony to use a stolen but valid social security number? And wouldn't this be enough to get her deported especially if my brother pulled his petition for citizenship?

I don't know. It might be enough, it might not.

Almost no chance of being deported, Under our current government rules, ( not the laws but the rules of how to enforce them) they are not active on trying to deport anyone who has kids who are citizens. Plus that is not to say she would not just take the kids and run off while out of jail waiting for a immigration hearing.

If he wants to do something, he files for divorce and custody of the kids.