King Richard III (I, iii, 336-338)
Marbury v. Madison 1803, vol 5, pg 137
It is also not entirely unworthy of observation that, in declaring what shall be the supreme law of the land, the Constitution itself is first mentioned, and not the laws of the United States generally, but those only which shall be made in pursuance of the Constitution, have that rank.
Thus, the particular phraseology of the Constitution of the United States confirms and strengthens the principle, supposed to be essential to all written Constitutions, that
a law repugnant to the Constitution is void,
and that courts, as well as other departments, are bound by that instrument.
emphasis added.
Indeed. The US Constitution is primary, then laws and then regulations ( well, regs included because of the admin state status since the APA etc).
I used to work for a MO university. I carried concealed daily on campus, in university vehicles and to university funded conferences etc ( where CC was lawful). Of course, I risked being fired.
I get it that the good professor wanted to challenge the rulings of the university, but the law already excuses CC w/o permission ( the CCWL is the permission slip, I suppose).
This case will be appealed to the MO SC, and we shall see what the court thinks, in a year or three.