You don't - You explain the benefits that support could provide for the child.
if the mother terminates her rights can he collect child support from the mother if child lives with him?
Reference to "seventy four percent" is unclear, but it seems unlikely that the child's mother could collect current child support in such a situation. (She can still collect past-due support, if any.)
File for in and they will contact Canada.
Marriage of the mother, father or child have no relationship to the collection of a debt.
no the mother should have the legal obligation to take care of the child
no not at the age of 20 years of the child. It may be of 25 years of the child
Yes, if the father has more time with the child than the mother, she will owe him child support.
In a word, No.
The father can file for this change.
If she's kept the claim current.
It depends on the state. In most states the father would still be required to pay child support, even though he is living with the mother and the child. However, if the father was financially supporting the mother and child, it's likely that the courts would suspend the child support order.
If the mother has the full custody then she can take the child, and she can get the child support. If she doesn't have the full custody, then she is not allowed to take the child without the father consent, but she still can get the child support.