My ex-husband is currently $15,000+ in arrears in child support as of May 1st. It's an arrangement we have come up with between ourselves. He has no interest in seeing his 2 boys. Hasn't seen or talked to them in over 3 years (they are only 7 and 8). My current husband of 2 years would love nothing more than to adopt thembut my ex will not even talk to me. He knows he is behind a lot and would rather just not talk to me rather than come up with another excuse. How do I get him to sign over his rights so my husband can adopt them?