The National Academy of Sciences (NAS) made headlines when it issued a broadside that would, if followed by Congress, grant an open-ended license for biotech researchers to clone human life. True, the NAS recommended that Congress ban "reproductive" cloning, that is, the use of a cloned embryo to produce a born baby. But it also urged that human cloning for purposes of experimentation--often called "therapeutic" or "research" cloning--remain unimpeded by legal restrictions. …