Puerto Rican citizenship
In 1952, upon U.S. Congress approving the Constitution of the Commonwealth of Puerto Rico, also reaffirmed that Puerto Rican citizenship continued in full force. This was further reaffirmed in 2006 while the U.S. Senate probed into the President's Task Force on Puerto Rico's status. In 1953, U.S Ambassador Henry Cabot Lodge Jr., in a memorandum sent to the United Nations, recognized that "the people of Puerto Rico continue to be citizens of the United States as well as of Puerto Rico."
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.