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.
If there is a child support order in place, and your child is now an adult and has completed their education, then yes. You can have the order modified to stop child support as the child no longer meets the requirements of child support
The child can not stop the child support because the support goes to his parent. The parent paying can get the agreement changed at the courts.
The courts may approve you/your Mom's request to waive past-due support.
Does this mean the child is an adult?
from child support enforcement
18
When the child turns 18 and becomes an adult, the parent is no longer obligated to pay child support.
Child support arrears do not expire until they are paid.
No
No. Back child support is money you should have been paying when you didn't. You owe it until it is all paid up.
Yes, it can.
They might.