This bill requires the Office of Management and Budget (OMB) to report annually to Congress regarding all assessed and voluntary U.S. contributions to the United Nations (U.N.) and its affiliated agencies and related bodies during the previous fiscal year. The report shall include: (1) the total amount of all assessed and voluntary U.S. contributions to the U.N. and its affiliated agencies and related bodies; (2) the approximate percentage of U.S. contributions to each such agency or body in a fiscal year when compared with all such contributions in that fiscal year; and (3) the amount, description, and purpose of each contribution, the identity of the donating U.S. agency, and the identity of the recipient U.N. agency or body. The first report shall include information for the previous three fiscal years. OMB shall post a version of such report on a publicly available website.