Harry Reid's unsubstantiated charge that Mitt Romney paid no taxes for a decade is a reminder of why so many Americans are turned off by politics. The Majority Leader of the U.S. Senate should not be trafficking in hearsay; if he has an evidence-based attack to make on Romney, he should start with the evidence -- if there is any. On its face, Reid's claim seems absurd: No politician as ambitious and calculating as Romney would pay zero taxes. Even if that were possible under law, Romney surely would have found a way to pay something.