I am 25 and live in Cincinnati, OH currently. My father never paid tens of thousands of dollars in child support when I was growing up. He lives in Oklahoma. During the time the child support was owed, when I was growing up, he lived in Oklahoma and, for some time, in South Carolina. During that same time, I lived in Texas. I do not know specifics about what my mom did or didn't do during that time to get that money and I don't know the exact amount he owes. I talked to someone with the state of Oklahoma who says there is nothing I can do now. Is that true? Is it possible I could sue him in some sort of civil suit for the money he never paid? If not, could my mom sue? Thanks.