This bill aims to significantly restrict the scope of judicial remedies issued by federal courts. A central provision prohibits courts from issuing any order, including injunctions, vacaturs, stays, or temporary restraining orders, that purports to restrain enforcement against or compel action in favor of a non-party regarding statutes, regulations, or executive actions. This limitation applies unless the non-party is represented by a party acting in a representative capacity, such as in a class action, thereby targeting what are commonly known as "national injunctions." The legislation also amends provisions related to declaratory judgments and judicial review under the Administrative Procedure Act, specifying that relief should be limited to persons directly before the court. Furthermore, the bill makes certain temporary restraining orders, specifically those affecting the United States or a State, immediately appealable. These changes collectively seek to narrow the reach of federal court orders to the specific parties involved in a case, preventing broader application to individuals or entities not directly participating in the litigation.