Barack Obama’s criticizing McCain for apparently saying Iraq troop numbers are down to pre-surge levels.

But it seems like Senator McCain’s a lot more interested in my travel plans than the facts, because yesterday – in his continued effort to put the best light on a failed policy – he stood up in Wisconsin and said, “We have drawn down to pre-surge levels” in Iraq.

“That’s not true, and anyone running for Commander-in-Chief should know better. As the saying goes, you’re entitled to your own view, but not your own facts.

McCain’s striking back, saying he didn’t misspeak, but rather the argument is over verb tenses.

Does Obama really want to get into an argument over what presidents should know? I mean, really? Shouldn’t presidents know there are 50 — not 57 — states? Shouldn’t presidents know that Canada has a prime minister — not a president? Shouldn’t commander-in-chiefs know that Afghanis speak Dari and Pashto — not Arabic? Shouldn’t presidents know the purpose of Memorial Day? Shouldn’t a president know basic family and world history? Shouldn’t presidents know what city they’re actually in?