“court” means a court or administrative agency of a State that is authorized by State law to establish the amount of child support payable by a contestant or make a modification of a child support order.
“modification” means a change in a child support order that affects the amount, scope, or duration of the order and modifies, replaces, supersedes, or otherwise is made subsequent to the child support order.
“State” means a State of the United States, the District of Columbia, the Commonwealth of Puerto Rico, the territories and possessions of the United States, and Indian country (as defined in section
1151 of title
18).