Puerto Rican citizenship
In 1994, Puerto Rican activist Juan Mari Brás flew to Venezuela and renounced his US citizenship before a consular agent in the US Embassy in Caracas. Mari Brás, through his renunciation of U.S. citizenship, sought to redefine Section VII as a source of law that recognized a Puerto Rican nationality separate from that of the United States. In December 1995, his denaturalization was confirmed by the US State Department. Among the arguments that ensued over his action was whether he would now be able to vote in elections in Puerto Rico. On November 18, 1997, the Supreme Court of Puerto Rico through its ruling in "Miriam J. Ramirez de Ferrer v. Juan Mari Brás" reaffirmed the Puerto Rican citizenship by ruling that U.S. citizenship was not a requirement to vote in Puerto Rico. According to the court's majority opinion, the Puerto Rican citizenship is recognized several times in the Puerto Rican constitution including section 5 of article III, section 3 of article IV, and section 9 of article V. In a 2006 memorandum, the Secretary of Justice of Puerto Rico concluded, based on the Mari Brás case, that the Puerto Rican citizenship is "separate and different" from the United States citizenship.
Relinquishment of United States nationality
People who relinquish U.S. citizenship generally have lived abroad for many years, and nearly all of them are citizens of another country. Unlike most other countries, the U.S. does not prohibit its citizens from making themselves stateless, but the State Department strongly recommends against it, and very few choose to do so. It is usually impossible to relinquish citizenship while in U.S. territory, and courts have rejected arguments that U.S. state citizenship or Puerto Rican citizenship give an ex-U.S. citizen the right to enter or reside in the U.S. without the permission of the U.S. government. Like any other foreigner or stateless person, an ex-U.S. citizen requires permission from the U.S. government, such as a U.S. visa or visa waiver, in order to visit the United States.