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

Serving on a jury is a responsibility that is exclusively designated for United States citizens. This civic duty is a cornerstone of the justice system, ensuring that legal decisions are made by a group of peers who share the same citizenship rights and obligations. The jury system is fundamental to the concept of a fair trial, as it promotes impartiality and accountability in legal proceedings.

In contrast, while paying taxes and obeying traffic laws are obligations that apply broadly to all residents of the United States, they do not specifically require citizenship. Similarly, voting in local elections, while primarily a right reserved for citizens, may also include certain non-citizens in specific jurisdictions or contexts, thus not exclusively belonging to citizens. Therefore, serving on a jury clearly illustrates a civic duty that embodies the active participation and engagement of citizens in their government and societal functions.