David Barton Calls for a Constitutional Convention for Some Reason

Today, Glenn Beck’s The Blaze breathlessly announced that “another big name” has endorsed the calling of a Constitutional convention.  For some reason, David Barton wants to convene a convention of states to do something.
Barton and others on this road believe the federal government operates unconstitutionally but what they would do to stop it with a convention is not clear. Given what Barton thinks about the Constitution (it quotes the Bible verbatim), I am hoping his big name isn’t successful in his new quest.