My sister-in-law got married to indian guy, After he Become u.s citizen, now he is asking for divorce, can we file for fraud Marriage. We didn't know he was Getting Married just Because for Getting us citizenship.
Thanks

What is a fraud marriage. Its still a divorce. Becoming a citizen is a long process so I doubt that they would qualify for an anullment.

You might look into the laws of that in your area, but most likely, a divorce is going to be the answer regardless of the grounds of getting married.