Sec. 813. In the ease of any letter of offer to sell or any proposal to transfer defense articles which are valued at $25,000,000 or more from the United States active forces’ inventories, the Secretary of Defense shall submit a report to the Congress setting forth— (1) the impact of such sales or transfers on the current readiness of United States forces; and (2) the adequacy of reimbursements to cover, at the time of replenishment to United States’ inventories, the full replacement costs of those items sold or transferred.