Pondering when Dan Rather will swing Timing is everything as CBS looks for an out Months before Richard Nixon's resignation, as he was facing impeachment, a "60 Minutes" commentator compared the president to a dead mouse on the kitchen floor of America. The only issue, observed Nicholas von Hoffman, was who was going to pick him up by the tail and toss him into the trash. CBS executives, much lathered by Von Hoffman's effrontery, booted him from his post as a regular commentator. These 30 years later, CBS executives are in a new lather over another Republican president, and they're...