The topic of this post is this: even after the release of the very document they demanded, the most hardcore Birthers are still unconvinced. In fact, proving them wrong only served to strengthen their initial belief (what social psychologists call "cognitive dissonance.")
So, can you make a skeptic believe? Yes, according to Dan Kahan of Yale Cognition Project: all you need is a little justification to save the skeptic's ego.
Gregory Ferenstein of Fast Company explains:
The techniques boil down to allowing partisans to maintain their political philosophy in the midst of accepting new facts. For instance, for "small government" conservatives, or what the YCC calls "individualists," it's strategically important to highlight the power of competition and the ineptitude of government. Namely, "Obama's rightful fear of losing in the 2012 election forced him to come clean with his birth certificate, though this is just another illustration that government can't do things in the timely manner."