[nescioquid]

Duty would imply a relationship of mutual obligations between the citizen and the state.

Thatcherite neoliberalism found an acolyte in Reagan, and ever since in this country, "government is the problem, not the solution". Under such a regime where the state seems to have no real obligations to its citizens, talk of duty seems rather precious.

[aidenn0]

Duty is not necessarily to the state; it can be to society as well. In fact, there's a large fraction of neoliberals who would argue that individuals following their duty to society should displace the state in many areas.