YOU are not the president-elect of the U.S., nor are your children. All he has to do is walk in, say, "I'm the president-elect. Give me my original birth certificate." Like they'd say no. And with all the stink raised over this, I have to laugh out loud for any reason they won't release it and why he doesn't turn it over.
As I said a long time ago, even if it turns out he's not qualified to be president for this reason, it won't make one bit of difference to his devotees. As long as he's president, that's all that matters.