The enactment of the Jones-Shafroth Act grants Puerto Ricans United States citizenship.

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 The act superseded the Foraker Act and granted U.S. citizenship to anyone born in Puerto Rico on or after April 11, 1899. 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 bondholder resides.