This is not a unreasonable thing to ask for since being a "natural born citizen" of the US is a constitutional requirement for the job of President. It's not hateful, and it's not racist.
Proving that you are should be an honor.
Yet will not produce either. Why?
The longer it goes wityhout him doing this, the more insistent the demands for it will become. Obama cannot hide from proving his constitutional qualification once people in any numbers seriously doubt it.
BTW, under what conditions and with what financial aid did Obama attend college? ANd when he traveled to Pakistan while in college, under what conditions and what passport did he use to do so? Again, relatively simple things to put to rest...but they have not been put to rest. To the contrary, they've been covered up.
Reasonable people begin to wonder why.