"The Office of Science and Technology Policy (OSTP) hereby directs each Federal agency with over $100 million in annual conduct of research and development expenditures to develop a plan to support increased public access to the results of research funded by the Federal Government."
"So why is the AAS supportive of open access? "Because we're already in compliance with the administration's new guidelines," says AAS Executive Officer Kevin B. Marvel. "Research articles from all AAS journals are available online, without charge, 12 months after their original date of publication, and they've been available that way for years."
Keith's update: Why NASA hasn't said anything about this? No mention at the NASA Open Government Initiative.