What is one responsibility that is only for United States citizens?

Serving on a jury is a responsibility that is specifically reserved for United States citizens. This civic duty is foundational to the justice system in the U.S., ensuring that a defendant's peers—who have a vested interest in the community—are the ones to judge their case. This participation in the legal system underscores the principle of being tried by a jury of one’s peers, which is a crucial element of due process in the American legal system.

While paying taxes, obeying the law, and voting in elections are essential responsibilities, they extend beyond just citizens. For example, legal residents and certain non-citizens may be subject to tax obligations and laws. Voting, however, although primarily reserved for citizens, does not establish a civic duty on par with jury service, as not all citizens may choose to vote. Therefore, serving on a jury clearly distinguishes the civic responsibilities exclusive to United States citizens.