I read a book some years ago titled "The Bell Curve," and the subject matter was the intelligence of the various races. As I remember, the average IQ of Chinese, Japanese and Caucasians was 113 and the average of the other races was 100. This doesn't mean that there are no low-IQ white people or high-IQ black people. These are averages! Those at the higher IQ levels are generally more successful in income and accomplishments, and this is a fact of life.
I personally don't think that our president is very smart, but Valerie Jarrett is very brilliant and is probably really in charge while Barack H. Obama is out talking very skillfully to the left wing of our country. The USA is being dumbed down these days, and I am glad I am 84.