Answer:
States could nullify a federal law if they knew it was unconstitutional.
Step-by-step explanation:
Through a theory known as the nullification act, states have a right to nullify an act of the federal government within their boundary.
Right of states in America means that each state has inherent rights and also sovereignty. States have jurisdiction over their own affairs due to their sovereignty. Thereby reducing the powers of the national or the federal government.
Based on this, a state can nullify a federal law which it considers as unconstitutional.