As a conservative author, I'm used to a little controversy. Even so, the reaction to my new book, "The Enemy at Home," has felt, well, a little hysterical. "Ratfink writes new book," James Wolcott, cultural critic for Vanity Fair, declares in his blog. He goes on to call my book a "sleazy, shameless, ignorant, ahistorical, tendentious, meretricious lie." In the pages of Esquire, Mark Warren charges that I "hate America" and have "taken to heart" Osama bin Laden's view of the United States. (Warren also challenged me to a fight and threatened to put me in the hospital.) In his...