What is the Dormant Commerce Clause ? a. An affirmative constitutional grant to states to regulate interstate commerce, even if federal law preempts their laws b. A prohibition on states regulating...

An affirmative constitutional grant to states to regulate interstate commerce, even if federal law preempts their laws

A prohibition on states regulating commerce when it would be detrimental to the national economy

A federal law that gives states new powers to regulate interstate commerce

A constitutional provision that requires states to get each other's permission on certain regulations