How much "experience" should a president have? Good question. I asked the Constitution, and this is what it told me:
"No person except a natural born Citizen, or a Citizen of the United States, at the time of the Adoption of this Constitution, shall be eligible to the Office of President; neither shall any Person be eligible to that Office who shall not have attained to the Age of thirty-five Years, and been fourteen Years a Resident within the United States."
Sounds like the Founding Fathers weren't too worried about "experience" as a qualifying factor for the presidency.
Also, I would like to point out once again that John McCain was not born in the United States.