As noted by David Fellman constitutionalism "should not be taken to mean that if a state has a constitution, it is necessarily committed to the idea of constitutionalism. In a very real sense… every state may be said to have a constitution, since every state has institutions which are at the very least expected to be permanent, and every state has established ways of doing things."
William Norman Grigg (born February 4, 1963) is the author of several books from a constitutionalist perspective.
Thomas DiLorenzo wrote that libertarian/conservative constitutionalists believe that the way to limit government is to enforce the United States Constitution.
Rutherford's political book Lex, Rex was written in response to John Maxwell's "Sacro-Sanctum Regus Majestas" and presented a theory of limited government and constitutionalism raised Rutherford to merited eminence as a philosophical thinker.