Short of losing reelection, I believe that to be the most likely scenario for his removal from office. I do think that the 25th presents some possibilities of theoretical interest, but I'm no expert in the Presidential succession.
I think the most important thing and realistic cause people should support are these statewide measures that require, with great specificity, what birth documents are acceptable to place a nominee on a ballot. I think that this avenue would provides for the most fruit for the labor with respect to this issue. If Obama can't place his name on a few electorally rich states, he's toast.
Assuming, of course than no one is stupid enough to murder him.
That would be bad, very bad. Not only would it give the jihadi that most precious of all commodities -martyrdom- it would insure that every foul scheme he ever wanted would get implemented on the dead Kennedy plan.
At least while he's alive the republicans can put up some token resistance.
They are incapable of fighting a dead man.
Politically he might be toast if he can't get on ONE state's ballot.
The MSM can hardly ignore that little factoid, and even Joe Sixpack might have a second thought or two.