I was granted temporary custody with my protection order. Will another state enforce this custody order?
Yes. Federal law, which applies to all states, considers custody, visitation, and child support provisions that are included in a protective order to be enforceable across state lines under the theory of "full faith and credit." Law enforcement and courts in another state are generally required by federal law to enforce these provisions1 assuming they comply with certain federal laws, specifically the Uniform Child Custody Jurisdiction Act (UCCJA) or the Uniform Child Custody Jurisdiction and Enforcement Act (UCCJEA), and the Parental Kidnapping Prevention Act of 1980.
1 See 18 USC § 2266(5)(b)