My step father in law is a horrible person. I'm considering calling  ice on  him
That's awful! Why would you call ICE on him?
I don't want him to be in this country
Family can be annoying sometimes but it would be wrong to call ICE on a family member. If you were to do that other members of your family would be very upset with you.
It's okay they're always upset with me
You shouldn't try to get someone deported, especially a family member. They'll be separated from the whole family and sent to another country. Would you want it on your conscience if they were never able to see the family again?