The Jones–Shafroth Act (Pub.L. 64–368, 39 Stat. 951, enacted March 2, 1917) —also known as the Jones Act of Puerto Rico, Jones Law of Puerto Rico, or as the Puerto Rican Federal Relations Act of 1917— was an Act of the United States Congress, signed by President Woodrow Wilson on March 2, 1917. The act superseded the Foraker Act and granted U.S. Citizenship to anyone born in Puerto Rico on or after April 25, 1898. It also created the Senate of Puerto Rico, established a bill of rights, and authorized the election of a Resident Commissioner (previously appointed by the President) to a four-year term. The act also exempted Puerto Rican bonds from federal, state, and local taxes regardless of where the bond holder resides.
The impetus for this legislation came from a complex of local and mainland interests. Puerto Ricans lacked internationally recognized citizenship; but the local council was wary of "imposing citizenship." Luis Muñoz Rivera, the Resident Commissioner in Washington, argued in its favor, giving several speeches in the House of Representatives. On 5 May 1916 he demanded:
"Give us now the field of experiment which we ask of you… It is easy for us to set up a stable republican government with all possible guarantees for all possible interests. And afterwards, when you… give us our independence… you will stand before humanity as a great creator of new nationalities and a great liberator of oppressed people."
Rep. William Atkinson Jones, (D-Virginia), chairman of the House Committee on Insular Affairs, and Sen. John Shafroth, (D-Colorado), chairman of the Committee on Pacific Islands and Puerto Rico, sponsored the legislation which bears their names.