The Supreme Court would make that determination.
Declares laws unconstitutional-
judicial reveiw go apex kids :)
The Judicial branch declares acts or actions to be unconstitutional.
Who can declare laws unconstitutional
Judicial Review
judial review
judicial review
judicial review
They are called "unconstitutional laws".
The Supreme Court declares a federal law unconstitutional.
The legal concept or theory whereby a court declares a law unconstitutional is commonly called "judicial review." This was not so much established as confirmed by the US Supreme Court case Marbury v. Madison.
That the law doesn't follow the constitution.