Citizenship of the United States is a status that entails specific rights, duties and benefits. Citizenship is understood as a "right to have rights" since it serves as a foundation of fundamental rights derived from and protected by the Constitution and laws of the United States, such as the right to freedom of expression, vote, due process, live and work in the United States, and to receive federal assistance. However, not all U.S. citizens, such as those living in Puerto Rico, have the right to vote in national elections.

U.S. law permits multiple citizenship. A citizen of another country naturalized as a U.S. citizen may retain their previous citizenship, though they must renounce allegiance to the other country. A U.S. citizen retains U.S. citizenship when becoming the citizen of another country, should that country's laws allow it. Citizenship can be renounced by American citizens who also hold another citizenship via a formal procedure at a U.S. Embassy, and it can also be restored.

Benefits