Your question is not a matter of immigration law but rather family law. You could file a court action seeking custody and/or visitation. The problem is that you will need to locate your child and former partner. To have jurisdiction in such cases, most courts require the child to live in the area where the case is filed. Your former partner will also need to be served. I encourage you to consult a family law attorney.
Answered on May 19th, 2016 at 2:36 PM