What mechanism allows state laws to be challenged if they conflict with federal laws?

What is the primary function of state governments in the context of American federalism?

Which document outlines the structure and powers of the U.S. government, establishing the federal system?

Which term describes the powers specifically granted to the federal government by the Constitution?

What doctrine in American federalism grants states the authority to legislate on matters not explicitly reserved for the federal government?

In the context of American federalism, what term describes the division of responsibilities and powers between national and state governments?

Which amendment to the U.S. Constitution specifically addresses the balance of powers between state and federal governments?

What principle allows U.S. states to enact their own laws while still adhering to federal law?