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

Serving on a jury is a responsibility specifically reserved for United States citizens because it is a fundamental aspect of the American legal system, ensuring that a defendant's right to a trial by a jury of their peers is upheld. This duty reflects the principles of citizenship, as jurors are entrusted with making critical decisions about legal cases that can impact the lives of individuals. Non-citizens, while they may have many rights and responsibilities, are not required to serve on juries, as the jury system is designed to include only those who have sworn allegiance to the United States and fully participate in its civic duties.

Paying taxes, registering for the draft, and voting in local elections are responsibilities that may include permanent residents in certain contexts, or they may not be exclusive to citizens. Thus, serving on a jury distinctly emphasizes the role of citizenship in engaging with the legal framework of the nation.