Name one right only for United States citizens.

Why this is the answer

Two answers work: voting in a federal election and running for federal office. Both are rights a green card does not carry. Start with the ballot. A permanent resident may be allowed to vote in a local or state election whose rules do not demand citizenship, but no federal election is open to anyone except citizens. For the office-holding answer, the Constitution itself sets a citizenship clock for Congress and the presidency. Article I says a member of the House must be at least twenty-five years old and a citizen for seven years, and a senator at least thirty and a citizen for nine. Article II is stricter about the presidency. Apart from people who were already citizens when the Constitution was adopted, only a natural-born citizen may serve, and that person must also be at least thirty-five with fourteen years of residence in the country. Put together, these rules mean a naturalized citizen can one day sit in Congress but cannot become President. Rights arrive paired with duties, and the USCIS study lessons list the responsibilities that go with citizenship: respecting the law, staying informed about issues, taking part in the democratic process and paying taxes. Watch out for an easy mix-up with the question right before this one on the list. That one asks about responsibilities, and jury service is an accepted answer there; this one asks about rights, and USCIS lists only the two above. Freedom of speech, freedom of religion and the right to bear arms are rights too, but the Constitution and the Bill of Rights extend them to everyone living in the United States, so they answer a different question. When the officer asks, the short form “vote in a federal election” is safe and complete. If you prefer the other answer, say “run for federal office” and keep the word federal, just as the official list does.