Hello, my name is ***** ***** I will be the immigration attorney helping you today.
First you must understand that just because her father wants to get you deported from the US, does not mean that he is going to be able to do that. If you have a green card already and you got it properly, not fraudulently then you should not fear your father in law. You have not done anything wrong that he can file a complaint against you about. Even if he contacts Department of Homeland Security and tried to make a complaint against you, he would need to have a real complaint about something that you did. Then they will investigate this and make a decision.
You do not need to do anything to protect yourself, just make sure that you do not do anything illegal then there will be no reason to deport you.
Good luck to you during this process and I hope this answer has helped you!
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