"U.S. citizen means a person obligated to comply with U.S. laws." Therefore a U.S. citizen: Obeying Laws Paying Taxes Jury Duty Serve as a Witness Register for the Draft Voting volunteer &...
The same as most other countries: Live in peace with your neighbour. Live according to the law of the land. Work and support yourself and your family if you can. Help the poor and sick. Fight for...