I mostly agree with this. My grandfather wrote a six volume biography of James Madison, but the Construction does provide for the basic Federal structure solidified by Marshall's Marbury vs. Madison. The Bill of Rights was meant to limit Federal not State power but that was changed. The Declaration of Independence is the country's foundational document but the Constitution was the foundation for the triumph of federalism in The Civil War.
The immense power of the, not these, United States has made today's geo-political world from its unnecessary wars, especially WWI, but the past is not to be undone. All we can do is fight for more freedom using the right ideological tools.
Stating that we don't have a Constitution is only a rhetorical flagpole for purpose of focus not discussion as such. Of course we do, what's left of it.
--Brant