Amendment X
The powers not delegated to the United States by the Constitution, nor prohibited by it to the states, are reserved to
the states respectively, or to the people.
This means that individual statements were written.
If the specific power was not identified as belonging
to the the Federal Government or identified as withheld
from the Federal Government, then it belongs to the
states or to the people.
This limits Federal Power to only the specific items
clearly defined in the U. S. Constitution and any
item that is vague or ambiguous, such as General
Welfare, belongs to the States or the People.
Power grabbers be damned!
How can we make them see that Is means Is,
just as night follows day!
Historical note: the person who wrote that amendment (and the particular Federalist Paper I quoted above) was the leader of the centralizing faction at the Convention. He wanted to give Congress the power to repeal state laws. If there were anyone at the Convention who wanted that much power for Congress, it would've been him.