The Constitution is not a law, but it empowers the people to make laws… The Constitution tells us what shall not be a lawful tender… The legislature has ceded up to us the privilege of enacting such laws as are not inconsistent with the Constitution of the United States… The different states, and even Congress itself, have passed many laws diametrically contrary to the Constitution of the United States…

Shall we be such fools as to be governed by its laws, which are unconstitutional? No! … The Constitution acknowledges that the people have all power not reserved to itself. I am a lawyer; I am a big lawyer and comprehend heaven, earth and hell, to bring forth knowledge that shall cover up all lawyers, doctors and other big bodies. This is the doctrine of the Constitution, so help me God. The Constitution is not law to us, but it makes provision for us whereby we can make laws. Where it provides that no one shall be hindered from worshiping God according to his own conscience, is a law. No legislature can enact a law to prohibit it. The Constitution provides to regulate bodies of men and not individuals.

( Source: Teachings of the Prophet Joseph Smith 278 )