Yes, and I don't see how his passport proves anything when his birth probably wasn't recorded and things are so shoddy in Kenya that he or his parents just have to tell the authorities what age they think he is.
There are medical methods of proving somebody's approximate age, such as an x-ray of the bones, which is being used in junior football competitions in India due to rampant age cheating there.
Those medical methods aren't very accurate. Does knowing he is 20+-5 years help anyone?
We have a 18 year old white guy with a legit age running 330. There was a 17 year old running 356 miles back in 60s. This isn't some unbelievable time.
And I love the idiots who think there was anything Obama could have done to quell the story. I am surprised they didn't suggest digging up his mom and running some DNA tests.