Congressional Budget Office Cost Estimate: H.R. 4270, Placing Restrictions on Teargas Exports and Crowd Control Technology to Hong Kong Act [open pdf - 123KB]
This is the Congressional Budget Office Cost Estimate as ordered reported by the House Committee on Foreign Affairs on September 25, 2019. From the Document: "H.R. 4270 would prohibit the Departments of State and Commerce from issuing licenses for the export of defense articles and munitions to the Hong Kong police. It also would require the departments to report to the Congress on their implementation of the bill. Both departments have jurisdiction over U.S. exports of defense articles: the Department of State regulates items for military use, and the Bureau of Industry and Security (BIS) at the Department of Commerce regulates items for commercial or dual use."
Congressional Budget Office: http://www.cbo.gov/