A system of government in which power is divided by a written constitution between a central government and regional or subdivisional governments. Each level must have some domain in which its policies are dominant and some genuine constitutional guarantee of its authority.
A centralized governmental system in which local or subdivisional governments exercise only those powers given to them by the central government.
A system consisting of a league of independent states, each having essentially sovereign powers. The central government created by such a league has only limited powers over the states.
Elastic Clause, or necessary and proper clause
The clause in Article 1, section 8, that grants congress the power to do whatever is neccesary to execute its specifically delegated powers.
The authority to legislate for the protection of the health, morals, safety, amd welfare of the people. In the United States, most police power is reserved to the states.
Powers held jointly by the national and state governments.
The constitutional provision that makes the constitution and federal laws superior to all conflicting state and local laws.