Okay, so Trump has no policy differences with Hillary or Obama that would seem to justify his running against Obama and raising some very sore issues for Obama that go directly to Obama's cred.
So, why?
Possibility one, Trump is really working for Hillary (see above).
Possibility two, Trump is squeezing Obama to get something from Obama that Trump wants very much and is unlikely to get without a Big Political Backroom Deal with Obozo.
Trump's involved heavily in New York real estate and gambling.
What could Obama do for Trump in a) New York RE or b) gaming, that would benefit Trump in ways Trump can't benefit himself?
How about, the price of Trump's going away, is that Obama drops his support of the Ground Zero Rabat/Mosque?
How about, this is about some gaming development projects Trump has got, and about Obama's using eminent domain for Trump's benefit under color of Kelo? Maybe, ummm, gaming in the National Park resorts? Something like that? Management of plum Park resorts, like Yosemite and Grand Canyon?
When Trump shakes the Tony Rezko tree and the eligibility tree simultaneously, he's shaking pretty hard. What does Trump want to fall out of the tree?
Anyone?
No, trump loses face if this ends in a back deal with Obama. He wants Obama out. And the whole stalking horse for Hillary BS - hilllary cannot get trump anything that he can’t get without her. Which is why he is freer than all the cowards out there who don’t question whether the emperor is naked.