Well, the 5 people who conducted the study are not working free AFAIK. They had to have expenses so this wasn't free. Personally I would love to find he is a phony but there must be eye witness verification.
So far it is all hearsay. And not worth the paper on which it is writ. There have been vetting investigations on him for ~10 years. When he went into the Illinois Congress. When he ran for the Ill. Senate. When he first ran for Pres. And don't you think Hillary didn't spare no expense to derail him when they competed for the Dem. nomination. If there is something there, the number of people in the necessary conspiracy must be in the hundreds.
His grandmother once stated he was born in Kenya but when she was questioned further, it seems she didn't understand the question. (I learned that today). She died shortly thereafter. D’ya think he offed her? Could be, after all his career is far more important than family.
I am just being pragmatic. What we want and what we can get, in reality, are two entirely different things.