The full text of our response is embedded below (with input and edits from co-signers). Most notably, we strongly advocate that NIH-funded information-based research resources should be released via a CC0 / Public Domain license. We also argue that despite the superficial reasonableness of the noncommercial provisions of CC-BY-NC and even the attribution requirements of CC-BY, both have the effect (usually unintended) of stifling data reuse. An this seems particularly counterproductive at a time when the NIH seeks to promote the principles of FAIR access to data.
While I think the entire text is worth a read, I also took the liberty of highlighting two passages that I feel most strongly illustrate both the problem and the opportunity that licensing choices provide.