The States already have this power. They need to use it.
Nullification, in United States constitutional history, is a legal theory that a State has the right to nullify, or invalidate, any federal law which that state has deemed unconstitutional. The theory is based on a view that the States formed the Union by an agreement (or "compact") among the States, and that as creators of the federal government, the States have the final authority to determine the limits of the power of that government. -----------------------