Human Cloning Ban and Stem Cell Research Protection Act of 2003

Requires the Comptroller General to report to the congressional judiciary committees on: (1) actions taken to enforce such prohibitions; (2) actions of State attorneys general to enforce similar State laws; (3) the Federal-State-local government coordination of enforcement actions; and (4) international laws relating to human cloning.

Amends the Public Health Service Act to require research involving nuclear transplantation to be conducted in accordance with applicable Federal standards for the protection of human subjects. Prohibits: (1) a somatic cell nucleus from being transplanted into a human oocyte (egg) that has undergone or will undergo fertilization; (2) an unfertilized blastocyst from being maintained after more than 14 days from its first cell division, not counting storage times at temperatures less than zero degrees centigrade; (3) an oocyte from being used in nuclear transplantation research unless donated voluntarily with the donor's informed consent; (4) an oocyte or unfertilized blastocyst from being acquired, received, or transferred for valuable consideration in interstate commerce; or (5) the conduct in a laboratory of nuclear transplantation in which human oocytes are subject to assisted reproductive technology treatments or procedures.