We are a nation at war. This is a time for serious people. We don't have the time to waste on third-party vanity candidates. Wait several years until the grown-ups solve the big problems, then idiots like this guy can get back in the sandbox to play.
In other words, "serious people" can only focus on one problem at a time. Your ideal "grown-up" candidate will worry about restoring our constitutional republic if and when the war on terror is over - and not a moment before. Shouldn't we expect a real leader to be able to multi-task?
He should seek to defend the Constitution on all fronts.