For determining who I address my remittance letter and coupon to ,who would I consider to be the "CEO" of child support enforcement? which is a department of finance and administration? Or would it be sent to the clearing house?
I would call them to ask them who is the head of the child support services... or I would go to their website (it will be your state's website) and should be able to find your state government hierarchy there and trace back to the head. In some states it is called the department of human services - child support services.
For example in Tennessee it would be the Commissioner Human Services who is the head of the department of human services - child support services.