This is the Congressional Budget Office (CBO) Cost Estimate as ordered reported by the House Committee on Foreign Affairs on September 30, 2021. From the Document: "H.R. 3485 would require the Administration to prepare, periodically update, and transmit to the Congress a list of foreign persons who have violated human rights on the basis of the victims' sexual orientation, gender identity, or sex characteristics. The bill would require the Department of State to designate at least one employee to track such violations. Individuals on that list would be ineligible for visas to, or entry into, the United States. Finally, H.R. 3485 would require the department to report annually to the Congress on its implementation of the bill and related matters. [...] Using information about the costs of similar requirements, CBO estimates that preparing the list of sanctionable persons and providing the reports required under H.R. 3485 would cost less than $500,000 over the 2022-2026 period; such spending would be subject to availability of appropriated funds."
Congressional Budget Office: http://www.cbo.gov/