The Office of Foreign Assets Control of the U.S. Department of the Treasury is amending and issuing regulations to carry out the purposes of Executive Order 13312 of July 29, 2003, which implemented the Clean Diamond Trade Act and the Kimberley Process Certification Scheme for rough diamonds and amended prior Executive orders that served as the bases for restricting or prohibiting the importation into the United States of rough diamonds from Sierra Leone or Liberia.