McCain pulls out Joe "The Plumber" Wurzelbacher, a guy from Ohio who McCain says will never be able to live the American dream if Obama is elected. He says Obama, who had an ecounter with Joe on the campaign trail, would tax Joe The Plumber at a rate that would keep him from owning his own plumbing business. This didn't make much sense because Joe The Plumber would have to be already making $250,000 a year in order to be taxed further under Obama's plan. And if Joe The Plumber is in that kind of position, is there a case here? Is Obama's plan really going to stifle Joe The Plumber? (Read the latest report on working poor families, and you'll see why Obama's tax plan is probably getting some traction among working class people.) By one estimate, nine out of 10 owners of small businesses make less than $250,000 a year and would not be taxed further under Obama's proposals. . . . So, nice try by McCain, but that punch didn't cause much damage. Rupert Murdoch's pro-McCain New York Post made a big deal out of Obama's exchange with Joe The Plumber the other day, so take that for what it's worth.