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

Voting in federal elections is a responsibility that is exclusive to United States citizens. This privilege allows citizens to participate directly in the democratic process by selecting their representatives and influencing government policy through their votes. The right to vote is fundamental in a democracy and provides citizens with a voice in how their government is run and the laws that are enacted.

While paying taxes, defending the Constitution, and obeying the law are important duties, they are not limited to citizens. Permanent residents, for example, are also required to pay taxes and obey laws. Defending the Constitution typically pertains to government officials and military personnel, but citizens bear the responsibility of upholding and supporting the Constitution through active participation in democracy, which includes voting. This makes voting the unique responsibility reserved specifically for citizens of the United States.