This is the Congressional Budget Office Cost Estimate as ordered reported by the Senate Committee on Homeland Security and Governmental Affairs on July 24, 2019. From the Document: "S. 2065 would require the Department of Homeland Security (DHS) to submit five annual reports to the Congress on digital content forgeries, also known as 'deepfakes.' Such forgeries manipulate digital content, such as videos, with the intent to mislead the viewer. The bill would require DHS to assess the use of digital content forgeries by foreign entities and evaluate available methods of detecting and mitigating such threats."
Congressional Budget Office: http://www.cbo.gov/