I think Trump and Bachmann might well be in cahoots so might several others, with the goal of putting Sarah Palin in the White House. We will see in October. If that’s the case Donald is a true American—if not—he’s a crass ego ego driven guy. Still, I like some of his ideas and talk. I think he choked on the BC and Hawaii.
I make no judgment as to the actual facts of the matter. I do however believe that how it was playing out, on balance it served to benefit Obama's side, and Trump's bull-rush into the issue pretty much finished it in the national discourse.
I think it's entirely possible that that was the entire objective and purpose of Trump's "candidacy" at the time--to remove the issue from Obama and the Democrats' arsenal so that "we" (however defined) could move on to more substantive attacks on Obama's record. That's the Machiavellian aspect that I find delicious to contemplate--even it is a completely bogus hypothesis.
Your mileage may vary.
I think Trump wants Palin to run, and is "signalling" that desire in ten-foot Trump letters from Trump Tower--that's my opinion.