Though Bush may be viewed as a laughingstock, he won't have the zero-integrity factors that have kept Nixon and Harding at the bottom in the presidential sweepstakes. Oddly, the president whom Bush most reminds me of is Herbert Hoover, whose name is synonymous with failure to respond to the Great Depression. When the stock market collapsed, Hoover, for ideological reasons, did too little. When 9/11 happened, Bush did too much, attacking the wrong country at the wrong time for the wrong reasons. He has joined Hoover as a case study on how not to be president.
