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.
Gag Law (Puerto Rico)
In 1914, the entire Puerto Rican House of Delegates demanded independence from the U.S. Instead, the U.S. imposed the Jones Act of 1917, which mandated U.S. citizenship on the entire island. The passage of the Jones Act coincided with America's entry unto World War I, and it allowed the U.S. to conscript Puerto Ricans into the U.S. military. The Jones Act was passed over the unanimous objection of the entire Puerto Rican House of Delegates, which was the legislature of Puerto Rico at that time. 
In addition to subjecting Puerto Ricans to the military draft, and sending them into World War I, the Jones Act created a bicameral, popularly elected legislature in Puerto Rico (following ratification of the Seventeenth Amendment to the United States Constitution in 1913 providing for popular election of senators), a bill of rights, and executive functions similar to those in most states. Because Puerto Rico was not a state, it did not have electoral status for U.S. presidential elections. The Act authorized popular election of the Resident Commissioner, previously appointed by the President of the U.S.