workshops for the broad fields of STEM in which the national rate of representation of women among tenured or tenure-track faculty or non-faculty researchers at doctorate-granting institutions of higher education is less than 25 percent, according to the most recent data available from the National Center for Science and Engineering Statistics. (5) Organizations eligible to carry out workshops Federal science agencies may carry out the program of workshops under this subsection by making grants to eligible organizations. In addition to any other organizations made eligible by the Federal science agencies, the following organizations are eligible for grants under this subsection: (A) Nonprofit scientific and professional societies and organizations that represent one or more STEM disciplines. (B) Nonprofit organizations that have the primary mission of advancing the participation of women or underrepresented minorities in STEM. (6) Characteristics of workshops The workshops shall have the following characteristics: (A) Invitees to workshops shall include at least— (i) the chairs of departments in the relevant STEM discipline or disciplines from at least the top 50 institutions of higher education, as determined by the amount of Federal research and development funds obligated to each institution of higher education in the prior year based on data available from the National Science Foundation