Sarah Knuckey, Director of the Project on Extrajudicial Executions at New York University School of Law and a Special Advisor to the UN Special Rapporteur on extrajudicial executions, calls this provision "an important step toward improving transparency," and notes that "Various U.N. officials, foreign governments, a broad range of civil society, and many others, including former U.S. Department of State Legal Advisor Harold Koh ... have called for the publication of such basic information."

 

This provision could be offered as an amendment in the Senate to the National Defense Authorization Act. It could be offered in the House as an amendment on the intelligence authorization, or as a freestanding bill. But it's not likely to become law unless there's some public agitation for it (you can participate in the public agitation here.)