When a ruler has gotten himself as controversial as Donald J. Trump has in the role of President, there may be born a longing for a stable and honest, yet ever readable and occasionally racy book that delves into the very nature of the one before us. Right away, four of the existing books on Trump are reviewed, a chapter each soon after the outset of "THAT TRUMP " Deep inside, a chapter invites him to offer his resignation-and writes a really nice...