When one state enters into an agreement with another state, it is referred to as an interstate compact. These compacts are legal agreements that are created between two or more states to address common issues or problems that affect them. In effect, these compacts are like treaties between states, and they serve to create a framework that allows for cooperation and coordination between them.

Interstate compacts can be created for a wide variety of reasons. For example, some states may enter into a compact to manage a shared natural resource, such as a river or lake. Other compacts may be created to address public safety issues, such as sharing information about criminal activity or coordinating emergency response efforts.

The process for creating an interstate compact typically involves several steps. First, the states involved must agree on the terms of the compact and draft a proposed agreement. Once the proposal is complete, it is submitted to the U.S. Congress for approval. If Congress approves the compact, it becomes legally binding and enforceable.

One important aspect of interstate compacts is that they are not subject to federal supremacy. This means that states are free to enter into these agreements without fear of federal interference. However, interstate compacts must still adhere to the U.S. Constitution and federal laws.

Interstate compacts can have a significant impact on the states involved. By working together, states can often achieve better outcomes than they could on their own. For example, an interstate compact on healthcare might allow smaller states to pool their resources to negotiate better rates with insurance companies. Similarly, a compact on transportation might allow states to coordinate their efforts to improve highways and bridges across multiple jurisdictions.

Overall, interstate compacts are an important tool that states can use to address common issues and achieve common goals. Whether it`s improving public safety, managing shared resources, or boosting economic growth, these agreements can help states work together effectively and efficiently. As such, they are a valuable tool for promoting cooperation and collaboration between states, and for ensuring that the needs of citizens are met in the most effective way possible.