Proposals may only be submitted by the following: - Organization limit varies by the type of proposal: <ul> <li>Standard Research Grants and Grants for Collaborative Research: U.S. Institutions of Higher Education and U.S. Non-profit, Non-academic Organizations.</li> <li>Scholars Awards: U.S. Institutions of Higher Education and U.S. Non-profit, Non-academic Organizations.</li> <li>...