"The real significance of the advance may be to re-ignite debate over human cloning, says bioethicist Insoo Hyun of Case Western Reserve University in Cleveland. "Basically, FDA has jurisdiction over clinical research using cloning technology to create a human being," says the Food and Drug Administration's Curtis Allen. "To date, FDA has not licensed such a therapy." "No legitimate scientists would want to use this technology for reproductive purposes," says stem cell expert George Daley of Children's Hospital Boston. "They would see it not only as unethical, but unsafe and probably illegal." Still, "This study shows that human cloning can be done," said Richard Doerflinger of the U.S. Conference of Catholic Bishops, which opposes research that destroys embryos. "The more important debate is whether it should be done.""