AAU, COGR, EDUCAUSE, APLU, and ACE comment letter in response to NIST Request for Public Comment on SP 800-171B, Protecting Controlled Unclassified Information in Nonfederal Systems and Organizations: Enhanced Security Requirements for Critical Programs and High Value Assets. The letter outlines community concerns about how and when sponsoring agencies will apply the enhanced requirements of NIST SP 800-171B and argues that researchers need a way to know in advance whether the requirements will apply to the programs and projects they seek to pursue.