States decide who gets on their Presidential ballot.
If just 6 states don't let him on the ballot, the mathematics becomes insurmountable.
If that doesn't happen, then ten million people in Washington on election day should get the message across.
If he can't produce the documentation to appear on just one, that tacit admission will be enough to kill any chance he might have.
If any state [such as AZ might] passes a presidential candidate eligibility law - Obama could be in a world of sh*t.
He would have to prove that he was born in the US AND that he was natural born. Since the term natural born has never been defined by the judiciary, Obama could do one of three [3] things:
1. Sue in court - this would probably be immediately taken up by SCOTUS under original jurisdiction, due to the urgency of the situation and any ruling in the lower courts would surely be appealed all the way to SCOTUS.
If Obama won at SCOTUS - he would be NBC. if he lost - he would be out, and would be removed from office [presumably by impeachment].
2. He could elect NOT to run in states that had the eligibility laws, bypassing the requirement to prove his status - but he would automatically lose electoral votes [in case he would have won there]. His NOT running in those states would also place doubt in the minds of voters in states that did not require him to show proof. This could cost him BIG TIME in swing states.
3. He could elect NOT to run in 2012 - which would NOT require him to prove anything ... but he would no longer be POTUS.