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U.S.- based non-profit/non-governmental organizations subject to sections 501 (c)(3) and 501 (c)(6) of the U.S. tax code  Public International Organizations (PIOs) or Foreign Public Entities (FPE)  Foreign-based non-profit organizations/nongovernment organizations (NGO)  Private, public, or state institutions of higher education (universities and colleges)  For-profit organizations or businesses.