The Constitution enumerates the powers of the Federal government. Then to make it clear that those are the only powers the Federal government has, they wrote the 10th amendment, which says anything the Federal government is not authorized to do, it is prohibited from doing.
Incorrect.
The Constitution affords Congress powers both expressed and implied (McCulloch v. Maryland (1819)).
Moreover, the 10th Amendment places no restrictions on Congress when acting in accordance with its Constitutional powers:
"The Tenth Amendment is not a limitation upon the authority of the National Government to resort to all means for the exercise of a granted power which are appropriate and plainly adapted to the permitted end."
United States v. Darby LII Legal Information Institute
And when citizens perceive Congress to have acted in a manner neither appropriate nor plainly adapted to the permitted end, they are at liberty to petition their elected representatives in Congress to repeal or amend such an act, or failing that, file suit in Federal court to seek relief, where the Supreme Court makes a final determination as to whether Congress has acted in accordance with the powers afforded it by the Constitution.
Last, until the Supreme Court rules otherwise, acts of Congress presumed to be necessary, proper, and Constitutional (see, e.g., US v. Morrison (2000)).
Wrong, the Supreme Court has denied the tax payer the right to sue the feds for violating the Constitution by inappropriate spending, saying the individual can't have suffered sufficient harm to give them standing.