The sign outside the ballroom was matter-of-fact: "Unsigned $20. Signed $15. No Haggling." That matter-of-fact sign was next to a matter-of-fact pile of books, which sat on a matter-of-fact folding table. And sitting behind it was a matter-of-fact man, whom you might walk right past without so much as a glance. That's too bad, because he could become the next President of the United States. The man was Michigan Rep. Thaddeus McCotter, and he was signing copies of his new book, "Seize Freedom! American Truths and Renewal in a Chaotic Age," outside the Conservative Principles Conference in Des Moines late...