Ah yes, it's been ten years -- a very appropriate time to reflect on the event, and consider an ATL without it.
I agree Democrats come back 2002 (and likely keep it at least the next six years), Bush wins 2004, immigration reform is a lot more likely, and that we don't see wars in Afghanistan or Iraq (at least not regime change levels). The Patriot Act and the whole torture debate are also most likely a moot point. So where does that leave the rest?
Well to start, the 2003 additions to the tax cuts probably don't happen -- combined with the absence of the wars, this is going to mean a lot more revenue coming in than OTL, so the deficits likely aren't nearly as big. Given that the National Guard won't be doing anything else, I can see the response to Hurricane Katrina being smoother. Not to say all the big disasters would be averted -- I'm fairly sure the economy would still enter crisis mode circa 2008, seeing as I can't think of any reason the housing bubble, low interest rates, et el, wouldn't still happen.
And that brings us to the election of 2008 -- seeing how different the dynamics of 2004 are from OTL, I don't see Obama rising so meteorically as a national figure, meaning Hillary may well see a far clearer road to the the nomination. Due in large measure to the aforementioned extra revenue, she would likely push a response that is a lot more aggressive, leading to a milder recession. TTL likely doesn't see anything close to the Tea Party movement, or at least not at the same scale.
So that's a rough ATL -- anybody want to guess what the news would be today, ten years after the PoD?