this is false. under a unitary government system that would be true but the US runs under a federalist system. states and the federal government are considered sovereign---at least as far as domestic issues go---and maintain a clear separation of powers. federal government is involved with national and intra-state issues while the states are involved with police and making regulations for their citizens. the federal government, can't, for example dissolve a state government like China could dissolve a province's government.