Colorado Republican Rep. Tom Tancredo's new book, "In Mortal Danger: The Battle For America's Borders and Security," should be required reading for every high-school student, public official, elected representative, judge and presidential candidate, as well as every citizen and prospective citizen in America. It is that important. It is that valuable. And were its contents widely digested, I have no doubt it would radically alter the political, cultural and social landscape of our country. That a politician has written a book is nothing new. That Tom Tancredo has something important to say about the direction of our country, our future,...