This is all allegation that could have been proven years ago. You go to the school and get the graduation programs, yearbooks, etc... They are kept at every institution. Very easy to check for college vs. University. Local police solve things every day using High School libraries for these items. The colleges can’t hide them. It would take less than 1 hour in the library. Even better, the classmates probably saved their programs. If not, the committee for reunions has master lists. These are things that can’t be deleted.
One would certainly think so, but absence of such evidence would not conclusively prove he wasn’t a Columbia student or graduate. I never had a picture in the university yearbook (this was considered a “Greeks and conformists” thing at the time). People who graduate at other times than Spring often miss the formal commencement exercise. You would still think the college publishes lists of its graduates, and that copies exist somewhere. Why haven’t Obama partisans put the evidence on the table years ago?