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 duty is rooted in the legal principle of providing a fair trial, as outlined in the Sixth Amendment of the U.S. Constitution, which guarantees the right to an impartial jury. The inclusion of only citizens in jury duty ensures that the members of the jury have a vested interest in the legal and civic processes of the country and understand the rights and responsibilities of citizenship.

In contrast, while paying taxes, obeying laws, and voting in state elections are responsibilities associated with both citizens and non-citizens in some contexts, serving on a jury is a hallmark of civic participation that underscores the unique role of citizens in upholding justice within the legal system.