Citizenship to the US? 1917
Before that they were Spanish subjects.
The 1917 Jones Act designated Puerto Ricans as US Citizens.
Puerto Ricans were first granted US Citizenship by the Jones Act which went into effect on March 2, 1917. This citizenship stopped for a time and was reestablished in 1927. This citizenship is by act of congress not part of the constitution.
Between two and three million that are self identified as Puerto Ricans.
Citizens.
Puerto Ricans have been citizens of the United States since a law was passed in 1917. Puerto Rico remained a Spanish colony for more than four centuries until the United States defeated Spain in the Spanish-American war in 1898 and occupied the island.
They are US Citizens.
For the same reason that some one from New York who moves to California is not Considered an immigrant. Puerto Rico is part of the United States. Puerto Ricans are US citizens by birth since 1917.
If you were asking "Are Puerto Ricans illegal aliens?" that would be a yes AND no answer. Puerto Ricans are considered immigrants because Puerto Rico is not part of the United States (its not one of our 50 states), but it is US territory (we protect them and stuff). :) hope this helped you :)
All puerto ricans are us citizen since 1917 and if they live in the states they have to to pay federal taxes.
For employment opportunity.
US citizenship
Many are.