Only if the claim was kept active after age 18.
Generally, no - although there might be an exception for a severely disabled child.
No. The purpose of collecting back child support is to financially reimburse the custodial parent for the support he or she provided in the past. It is not intended to provide present or future support. The debt is owed entirely to the mother in this case, since she was the one who provided financial support to the child. There are cases in which an adult can receive the back child support owed to their parent, but these usually involve the death of that parent.
Most states do not allow a child to collect back support as an adult. Although the right to child support belongs to the child, support is payable to the custodial parent to assist in the care and upbringing of that child. If the custodial parent did not receive that support, then she (or he) made contributions that should have come from the other parent, and the right to collect the back support belongs to her.
You don't. Once the child is an adult, child support is moot and the ex is home free.
Yes,
no
No, it is still owed with interest. The back child support was supposed to be paid while the child was growing up. Check your state laws.
The child can file prior to age 19.
yes dead beat.
extremely unlikely
She is entitled to child support regardless of where either of you live. It is your child and you must help support him/ her, and no, she does not have to move back to Nevada.
No by 23 it's too late. This should've been done before he became an adult.