Before the Jones-Shafroth Act, insular Puerto Ricans were not citizens of the United States.

Entity and relation annotations:
id: 0
type: entity
value: text: the Jones-Shafroth Act
labels: <Regulation>
id: 1
type: entity
value: text: Puerto Ricans
labels: <Organization>
id: 2
type: entity
value: text: the United States
labels: <Location>