When one parent lives in one state and the custodial parent and child live in another state, the case is called an interstate case. All states have a child support program and must work together to establish and enforce child support. The Uniform Interstate Family Support Act (UIFSA) guides states to establish and enforce orders when the non-custodial parent lives in a different state from the child. States may enforce orders that were established in other states without having to go through their local courts. When necessary, the other state may seek assistance from the state where the non-custodial parent lives to get help in establishing and enforcing a child support order. State child support agencies must cooperate with each other when dealing with child support issues. Interstate cases typically take longer to process than cases where all parties reside in the same state. Do not contact the other state directly since all communication needs to go through the state where you applied for services.