Puerto Rican citizenship
On March 2, 1917, the Jones–Shafroth Act was signed, collectively making Puerto Ricans United States citizens without rescinding their Puerto Rican citizenship. In 1922, the U.S. Supreme court in the case of "Balzac v. Porto Rico" ruled that the full protection and rights of the U.S constitution do not apply to residents of Puerto Rico until they come to reside in the United States proper. Luis Muñoz Rivera, who participated in the creation of the Jones-Shafroth Act, gave a speech in the U.S. House floor that argued in favor of Puerto Rican citizenship. He declared that "if the earth were to swallow the island, Puerto Ricans would prefer American citizenship to any citizenship in the world. But as long as the island existed, the residents preferred Puerto Rican citizenship." The Jones Act allowed locals to renounce the United States citizenship and remain exclusively Puerto Rican citizens, at the cost of being stripped of the right to vote. Despite these arbitrary limitations, 287 residents completed the process to forfeit the statutory recognition.
Puerto Rican Nationalist Party revolts of the 1950s
The Federal government did not quite know how to classify Puerto Ricans at first. In 1904, the Immigration Service implemented more strict regulations that classified people from Puerto Rico as aliens who tried to enter the US, although previously they had easily migrated. In a case carried to the US Supreme Court by Isabel González in 1904, the court ruled that Puerto Ricans had the right of free travel to the US. In 1917, the US granted full US citizenship to residents of Puerto Rico; they were restricted from voting in presidential elections because they did not have the status of a state.