A Few Simple Questions Sir

Dear Mr. Trump, I have a few questions for you, if I may. First, President Obama was once a Senator from the State of IL so what made you think that he wasn't a U.S. citizen at that time? Second, why did you perpetuate the 'birther' idea even after President Obama was elected and then provided a birth certificate? Third, after all of this time, why was it that you for the first time last Friday declared that Secretary Clinton starter the 'birther' idea? Fourth, perhaps most important of all, after all of these years of this 'birther' nonsense what made you change your mind? Dick