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

Serving on a jury is one responsibility that is specifically reserved for United States citizens. This duty is a fundamental aspect of the American legal system, ensuring that citizens have a direct role in the administration of justice. Only citizens can be called for jury duty, as it is seen as an essential civic responsibility and a means for ensuring a fair trial by a jury of one's peers. This concept is rooted in the belief that a jury should reflect the community's values and norms, which can best be represented by its members who hold citizenship.

In contrast, while paying taxes, attending school, and voting in elections carry significant importance in civic life, these responsibilities are not restricted solely to U.S. citizens. Non-citizens may also be required to pay taxes, and in some cases, legal residents may attend school. Voting in elections is primarily a citizen's right, but the act of serving on a jury is distinctively tied to citizenship, highlighting its unique role in civic duties.