Legal Question in Family Law in Oklahoma

No. This agreement is not binding unless it is executed under a court of law and particularly if the kids have demonstrated a desire to avoid this visitation. Children usually have a reason for this behavior and they should not be forced to so otherwise.

Secondly, if they have a lawyer, you should retain one too. Particularly, in the interest of the children. The only reason they were sucessful in executing the agreement is because you did not hire a lawyer to represent you and this behavior can be construded as an unethical practice by the attorney. However,its never to late. You can still hire one to get this agreement modified or overturned, particularly, it was primarily executed for money enlargement, exploitation or maniplulation by and through the IRS.

In closing, you didn't mention how this visitation was established during your divorce; if any, or if you were married to the absent parent. If you were not married his rights become secondary outside the court of law and this custody or visitation should have been clearly establishe if you were divorced. Never-the-less, visitation and/or parental rights can be revisited for the sake of the children.