It continues to be a bit baffling that John McCain decided last week that specific mastery of policy was the grounds on which he wants to pick a fight with Barack Obama. Check this out from Dave Roberts:

Speaking of Obama, he went after McCain on climate change, and he did so specifically on the basis of supporting 100% permit auctions. That's a somewhat subtle marker to those who don't know much about the issue, and it's going to take time to massage it into the body media. It is fantastic that Obama's getting started.

Speaking of McCain, he said he hadn't seen Obama's climate plan (clearly an issue he cares deeply about) and continued to deny that his cap-and-trade program included a mandatory cap. He could be lying or he could be confused about the policy; it's hard to think of what the third option might be.

That's right. John McCain doesn't know whether or not his own global warming plan puts a cap on carbon emissions. It's almost as if he signed on to a climate bill just because he's a camera hog and it seemed like a sexy topic, and he in fact has no understanding of or commitment to the issue.