Bush's decision to elevate Barack Obama to the presidential level was a huge mistake -- and Barack is taking advantage.

Here he is in Watertown, SD taking on Bush-McCain. It's a fun speech -- like watching him in the gas tax debate, except about an issue that really matters.

Some of the best lines:

• "The president did something that presidents don't do ... and that is launch a political attack targeted to the domestic market" while speaking to a foreign audience.
• "That's exactly the kind of appalling attack that has divided our country and has alienated the world. ... McCain embraced Bush's attack"
• "If George Bush and John McCain want to have a debate about protecting the United States of America that's a debate that I will have at any time in any place -- and that is a debate I will win because George Bush and John McCain have a lot to answer for."
• "They have to explain why we are now in our sixth year in Iraq."
• They've got to explain why Osama bin Laden is still at large. They have to explain why Iran and Hamas are now both stronger than ever. That's the Bush-McCain record.
• "John McCain still has not spelled out one substantial way that he'd be different than George Bush when it comes to foreign policy."
• "John McCain has nothing to offer but the naive and irresponsible belief that tough talk from Washington" alone will achieve our global objectives.

Prediction before the day is out...some Bush-McCain hack will attack Obama for criticizing the President while he is overseas!

Bumped at 10:55 (originally posted at 9:20 w/o video).