The custodial parent, it is assumed that he or she supported the child with their income. If however a state agency was involved in the support of the child that agency would receive the arrearages.
The parent. It was the parent who incurred the expenses to support the child.
The parent.
No. Child support arrears are owed to the 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.
Back dated to what if it's being stopped?
I doubt there were many child support laws back then. Normally, only the custodial parent of the child can file for child support, not the actual child.
Yes,
Yes.
Neither the custodial parent's drug use nor the child's age is a defense against not paying past-due child support.
Yes, the back support will still be owed, unless the custodial parent agrees to 'forgive' it.
No, usually support is only due when ordered by a court.
Generally, child support is only "backdated" to the date the custodial parent files for support.