To his critics, George W. Bush is a cowboy bully who bent the rules to get ahead, and even to win the presidency. Now, they may have proof the ``bad boy'' image goes way back. A newly unearthed photo shows a college-aged Bush grabbing a fellow rugby player in a head tackle with Bush's right arm cocked to give an upper-cut punch. The caption in the 1969 Yale yearbook notes: ``George Bush delivers illegal, but gratifying right hook to opposing ball carrier.'' Published in the Los Angeles Times Monday with an opinion column by 1969 Yale grad Jim Sleeper, the...