In fact, both an official short-form birth certificate issued by Hawaii and a local newspaper notice confirmed Obama was born in Honolulu. Under harsh questioning from O'Reilly, Trump allowed that perhaps the President had a U.S. birth certificate. Trump upped the ante on the birther issue, saying, "I have investigators in Hawaii. After six weeks of this distracting nonsense the White House released the long-form birth certificate. Even when wrong, Trump never lets goAlthough people who live in a fact-based world moved on from the birther controversy, Trump did not.

Source: CNN September 10, 2016 21:33 UTC