It might be very well because of Hawaii's state regulatory laws that would prevent them of releasing
the original document. There are some things that high profile people who are under the publics scrutiny,
just don't want to expose to the public, for numerous reasons.
Obama probably thought enough information has already been introduced on the matter, case closed.
As far as other information on his writings, grades at Harvard I'm sure there are privacy rules pertaining to
those issues as well. Who really cares anyways as long he does a good Job as being the President of the
United States ! Sheesh, some people have so much time willing to waste on such an unimportant issue.