I don’t think Trump is serious about the Presidency and he’s just using the birther issue to get free airtime. He didn’t get rich spending his own money in pursuit of goals he really doesn’t care about.
As I said on an earlier post, I don’t really care if he is doing it because he wants to run for the Presidency (unlikely, IMHO) or if he is a cat’s-paw for Hillary (more likely), or if he’s just having fun doing it — and frankly, right now, I don’t care. If there was ever a time when “the enemy of my enemy is my friend”, it’s when the mutual enemy is Obama.
And he’s perfect for this role. He’s too rich to scare, doesn’t really give a rat’s a$$ what anyone else thinks about him, loves to compete, and enjoys notoriety. Calling him “stupid” and impinging his motives is not going to have much of an affect. He does not live in a universe that requires anyone’s approval.
Plus he’s damn smart. Say what you want about Trump, you do not get to be as rich as he is by being an idiot. (Unless you’re born to wealth or marry into it, obviously.)
All in all, it’s probably scaring the pee out of the dems because THEY don’t know if Obama is lying or telling the truth, either — but they do know that Obama has paid an genuine fortune in legal fees to keep the birth certificate hidden.
People in an innocent state of mind would NOT spend that much money to keep something hidden unless the consequences of its exposure would be devastating.