In November 2014 the voters of Arizona passed Proposition 122, which says in its brief operative phrase

Proposition 122 "permits the state to exercise its sovereign authority by restricting state and local government personnel and financial resources to purposes that are consistent with the U.S. Constitution."

Is Arizona's Proposition 122 an issue of "imperium in imperio"? If so, how can you tell? Proposition 122 speaks of Arizona's "sovereign authority." Does this authority extend to the state being the ultimate arbiter of what is "constitutional" regarding the federal constitution? Explain your answer.