Thank you for visiting nature.com. You are using a browser version with limited support for CSS. To obtain
the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in
Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles
and JavaScript.
Academic freedom in the United States has come into conflict with national security. The Administration does not know what to do. The National Academy of Sciences should instruct it.
