Hmmmm.
I was under the impression that official record keeping laws applied also to the president, and every record-keeping law every other elected, appointed or hired employee must comply with.
Unless it compromises national security.
It is up to the Kenyan fraud to demonstrate HOW revealing ALL pardons granted can possibly compromise national security.
Back when he was signing pardons I took a quick look at the legal requirement to publish executive actions in the Federal Register and it did not to me appear to cover pardons.