Answer :
Every American citizen is obliged to serve on jury, otherwise known as jury duty--(in)famous because people tend to regard jury duty more as a burden than as a privilege.
Answer
The action which is considered a mandatory responsibility of US citizenship is Jury Duty.
Explanation
A Jury duty is is one of the highest duties of citizenship, it makes provision from the constitutional rights to be tried and it involves direct participation in the administration of justice. In the united states when a person is called for jury duty that service is mandatory.