The left attacks Joe the Plumber, who had the audacity to question Obama's tax increases:

"Joe the Plumber" isn’t a plumber — at least not a licensed one, or a registered one.

A check of state and local licensing agencies in Ohio and Michigan shows no plumbing licenses under Samuel Joseph Wurzelbacher’s name, or even misspellings of his name.

Ace of Spades has an interesting question:

Remind me again: Why is the media "vetting" a plumber who asked a question, rather than a Senator who answered it?

Update: John McCain, at a campaign rally, has picked up the ball:

Last weekend, Senator Obama showed up in Joe's driveway to ask for his vote, and Joe asked Senator Obama a tough question. I'm glad he did; I think Senator Obama could use a few more tough questions.

The response from Senator Obama and his campaign yesterday was to attack Joe. People are digging through his personal life and he has TV crews camped out in front of his house. He didn't ask for Senator Obama to come to his house. He wasn't recruited or prompted by our campaign. He just asked a question. And Americans ought to be able to ask Senator Obama tough questions without being smeared and targeted with political attacks.