Answer:
The preamble to the US Constitution contains only one sentence, but it is the most cited section of the document. The Preamble's reference to the “United States of America” has been interpreted in a long time to define the nature of the state entity created by the Constitution (that is, the federal government). In modern international law, the world consists of sovereign states (or “sovereign nations” in the modern equivalent). A state is considered “sovereign” if any of its ruling inhabitants is the supreme power over it; this concept is different from simple land ownership. Although each state was initially recognized as sovereign for itself, the Supreme Court ruled that the “United States of America” consists of only one sovereign nation in relation to foreign affairs and international relations; individual states cannot conduct international relations. Although the Constitution explicitly delegates to the federal government only some of the usual powers of sovereign governments (such as the power to declare war and conclude treaties), all such powers are inherently owned by the federal government as a representative of a country in the international community.
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