An interstate compact is an agreement between two or more states of the Unite States of America. Article I Section 10 of the United States Constitution provides that "no state shall enter into an agreement or compact with another state" without the consent of Congress. Frequently, these agreements create a new governmental agency which is responsible for administering or improving some shared resource such as a seaport or public transportation infrastructure. In some cases, a compact serves simply as a coordination mechanism between independent authorities in the member states. The lists below reflect this distinction.