An impeachable offense would be nice. Whaddya got?
Where do I start? Maybe a review of the Tenth Amendment to the US Constitution would be a good place to start. After a quick reading of that, he's failing to "Support and defend the Constitution" as stated in his oath when we talk about TARP, Auto Bailouts, Nationalized Healthcare, etc.
Almost every bit of the spending he has requested is for items specifically exempted from his authority by the Tenth Amendment.
He's trying to change our form of government from a republic to a socialist state without going through the constitutional convention process.
He's illegally fired several Inspector Generals who were doing their job by investigating his friends.
He broke the law in the Chrysler bailout in not paying off the secured bondholders as required and essentially giving their share to the union jerks.
I'm sure others will add more items, but this is a start.