<P> For the purposes of diversity jurisdiction in the United States civil procedure, corporate citizenship is determined by the principal place of business of the corporation . There is some degree of disagreement among legal authorities as to how exactly this may be determined . </P> <P> Another sense of "corporate citizenship" is a way to show support for causes such as social issues and the environment and, indirectly, gain a kind of "reputational advantage". </P> <P> A distinction is made between U.S. citizenship and U.S. nationality under U.S. Law . Citizenship in the United States comprises a larger set of privileges and rights for those persons that are U.S. citizens which is not afforded to individuals that are only U.S. nationals by virtue of their rights under U.S. Nationality Law . United States law makes a precise distinction between a United States citizen and a United States national . Although all U.S. citizens are also U.S. nationals, not all U.S. nationals are U.S. citizens . The United States Naturalization Act of 1790 (1 Stat. 103) provided the first rules to be followed by the United States in the granting of national citizenship after the ratification of the U.S. Constitution . A number of other Acts and statutes followed the Act of 1790 that expanded or addressed specific situations but it was not until the Immigration and Nationality Act of 1952 (Pub. L. 82--414, 66 Stat. 163, enacted June 27, 1952), codified under Title 8 of the United States Code (8 U.S.C. ch. 12), that the variety of statutes governing citizenship law but were organized within one single body of text . The Immigration and Nationality Act of 1952 set forth the legal requirements for the acquisition of American nationality . The Fourteenth Amendment (1868) addressed citizenship rights . The United States nationality law, 8 U.S.C. § 1408, despite its "nationality" title, comprises the statues that embody the law regarding both American citizenship and American nationality . </P> <P> For example, as specified in 8 U.S.C. § 1408, a person whose only connection to the U.S. is through birth in an outlying possession (which, as of March 2015, was defined in 8 U.S.C. § 1101 as American Samoa and Swains Island), or through descent from a person so born, acquires only U.S. nationality, not U.S. citizenship . Such person is said to be a U.S. national, not a U.S. citizen, or simply a U.S. noncitizen national . </P>

How long must candidates for senator have been citizens of the us