If you cared about college transcripts then I take it that you would demand them from every other president in American History in addition to every VP and loser of the presidential elections as well. However since you only demand them from Black presidents may I deduce that you also post on stormfront and neo-nazi websites where your views are more accepted? And yes, it's likely both Michelle and Barack got accepted purely on merit.
You don't seem to dispute or have a problem with Obama graduating top of his class for example. Are you implying that Harvard University working in conjuction with every one of his professors engaged in a conspiracy to change his grades and none of his classmates or administrators had a problem with this taking place?
The whole "I demand his transcripts" is just an evolution of the "I demand his birth certificate" movement that was discrediting the entire GOP's already dim reputation.