Hello, my name is ***** ***** I will be the immigration attorney helping you today.
It is possible in some instances for citizenship to be revoked in cases only where fraud is proven. It is not an easy thing to prove fraud but you can definitely try if you believe that there was fraud involved. For someone who is not yet a citizen and just a permanent resident, they have higher possibilities of either having the card revoked (if fraud is proven) or if they are charged with domestic violence, then can actually be deported. If there has been abuse, then the abused spouse should definitely report their spouse to the police and file charges.
If you want to report fraud, that would be done with your local Department of Homeland Security Investigations unit. They investigate marriage fraud. Here is the list of offices in case you want to contact them.
Good luck to you during this process and I hope this answer has helped you!
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