Intergovernmental pacts are interstate-negotiated treaties. The U.S. Supreme Court ruled that the term « compact » should be understood as a « treaty. »  Interstate states are the only method authorized by the U.S. Constitution for states to significantly alter their mutual relations.  As such, they provide a mechanism for states to create, among other things, intergovernmental agencies, often referred to as « commissions » or « authorities, » to address problems more effectively than in large conurbations, for example, which cover parts of several states, and to resolve disputes between states cooperatively instead of resorting to litigation.  The Constitution does not set the date or form of congressional approval of intergovernmental pacts.  Although Congress generally approves the pacts before they are implemented by contracting states, Congress can also give its approval after the subject of the agreement could not be fully considered by then.  In addition, if congressional approval is generally explicit, it can also be inferred on the basis of the circumstances.  Congress may submit its approval subject to the Covenant, which contains appropriate conditions that do not contragate constitutional restrictions.  If Congress approves a pact, Congress will not give up or reduce its constitutional powers.  An intergovernmental pact is an agreement between two or more states of the United States, which has been approved by the respective legislators of those states and, if necessary, approved by the United States Congress on the basis of the purpose of the Covenant.
Pacts that get congressional approval become federal. As interstate treaties, pacts affect the rights and duties of the states you (and their citizens); The U.S. Supreme Court has indicated that the interests of non-partisan states could be a factor in determining the need for congressional approval. A pact usually contains provisions relating to its purpose; The specific conditions relating to the theme of the pact; the creation, in some cases, of an intergovernmental agency to manage the pact or other management method; Funding sources and other provisions of the treaty, such as dispute resolution, enforcement, termination of the pact or resignation of a member. Many examples of compacts and intergovernmental agencies to manage them are available online. While intergovernmental pacts are binding treaties between the states that are part of them, pacts approved by Congress also become federal law. The Supreme Court ruled that a border between states, agreed in an intergovernmental pact approved by Congress, « is binding and ultimately settles the border between them  and with the same effect as a treaty between sovereign powers. »  In Cuyler v. Adams, the Court of Justice, when Congress approved an intergovernmental pact and that « the purpose of this agreement is an appropriate subject for congressional legislation, congressional approval turns the state agreement into federal law, in accordance with the compact clause. »  The U.S.
Court of Appeals for the Fourth Circuit has clarified that pacts approved by Congress, which do not threaten the supremacy of the federal state but address matters suitable for congressional legislation, still become a federal right, although such approval has not been required.  According to the Constitution, the U.S. Supreme Court is originally responsible for resolving interstate disputes and the Court will apply intergovernmental covenants in accordance with the principles of contract law.  While intergovernmental pacts historically consisted only of states as parties, the federal government has recently participated in some pacts.  Indeed, some Pacts require a representative of the federal government to participate in compact governance.