<Tr> <Td> <Ul> <Li> </Li> <Li> </Li> <Li> </Li> </Ul> </Td> </Tr> <Ul> <Li> </Li> <Li> </Li> <Li> </Li> </Ul> <P> The Tenth Amendment (Amendment X) to the United States Constitution, which is part of the Bill of Rights, was ratified on December 15, 1791 . It expresses the principle of federalism and states' rights, which strictly supports the entire plan of the original Constitution for the United States of America, by stating that the federal government possesses only those powers delegated to it by the United States Constitution . All remaining powers are reserved for the states or the people . </P> <P> The amendment was proposed by Congress in 1789 during its first term following the Constitutional Convention and ratification of the Constitution . It was considered by many members as a prerequisite of such ratification particularly to satisfy demands by the Anti-Federalism movement that opposed the creation of a stronger U.S. federal government . </P>

What permitted federalism as originally defined by the constitution to change