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

Serving on a jury is a responsibility that is specifically designated for United States citizens. This duty is rooted in the legal framework that emphasizes the importance of a citizen's participation in the judicial process, ensuring that juries represent a cross-section of the community. Jury duty allows citizens to contribute to the justice system, making decisions on cases that can significantly affect the lives of individuals involved.

While paying taxes, voting in elections, and obeying the law are also important responsibilities, they may apply to non-citizens in certain contexts. Non-citizens, for example, may be required to pay taxes, and local laws may allow some non-citizens to vote in particular elections. Obeying the law is a universal responsibility for all individuals within a state's jurisdiction, regardless of their citizenship status. Therefore, serving on a jury stands out as a civic duty reserved exclusively for citizens.