Going down the route of "find crimes to charge him with" is a bad idea for many reasons, one being: if it becomes commonplace to bend the spirit of laws just to send a message, then that will make the already-too-powerful courts even moreso.
For me this doesn't pass the sense test: should a person be able to knowingly, intentionally fake the results of a scientific experiment in order to secure a grant of taxpayer money? No. No more than you should be able to fake the 'results' of your yearly income, say, for the purpose of receiving welfare.
However, in this case since the target was a federal agency, presumably it is a federal crime already. More interesting I would think is that even if the US attorney doesn't want to press charges, I'm sure the AG of Iowa (and possibly Maryland) could.