Correct me if I'm wrong: Has the United States government ever demanded that a United States citizen prove he was a natural born citizen?
If the American people see this as no longer a necessary requirement, well, there's a process that must be followed to change the Constitutional requirement -- to do otherwise is to set a dreadful precedent.
McCain was tested for his “Natural Born Citizenship” by congress before he ran for President. He was qualified because both his parents were Americans at the time of his birth.
Obama was not, because he would not pass the test. It was a brilliant move by Dems to focus on McCain and then be generous to allow him to run. They had no issues running against a feeble old man. Getting Obamma past this requirement was their motive. (IE, “We gave you a gold plated pass for your Panamanian born senator, now leave us alone.”)
That opened the door for Obama to get in without being given a natural born citizen test.
Believe me, the fact that Obamma was not tested like McCain was not an accident. Harry Ried was running the show, and he slected Obama to run. We have never seen any original documents for Obama, and he was in fact born a British subject. As a matter of Fact, not opinion, we now have a "British born subject" running the American government.