You need to "show cause" your ex-wife in the Divorce Court, to enforce the terms of the Judgment of Divorce. Also, request sanctions and attorney fees against her. Talk to a CPA about raising the issue with the IRS - I believe there may be an IRS form you can file when the issue of who gets to claim the dependency exemption is in dispute between divorced Parties.
Answered on Feb 03rd, 2014 at 4:20 PM