'Course, this isn't a scientific question - can't be tested to be right or wrong. So, for it to be used well in arguments, it needs to be applied consistently. The article notes several inconsistencies, but the most striking can be summarized as follows: If embryonic stem cell research is indeed tantamount to "the taking of innocent human life" (as President Bush has said), then it's the same as infanticide. And IF that, THEN...
(T)he unimplanted human embryo is already a human being, morally equivalent to a person
Whatever your position, the article serves as an excellent example of critiquing others' arguments in an intellectual fasion.
If harvesting stem cells from a blastocyst were truly on a par with (infanticide), then the morally responsible policy would be to ban it, not merely deny it federal funding. If some doctors made a practice of killing children to get organs for transplantation, no one would take the position that the infanticide should be ineligible for federal funding but allowed to continue in the private sector. In fact, if we were persuaded that embryonic stem cell research were tantamount to infanticide, we would not only ban it but treat it as a grisly form of murder and subject scientists who performed it to criminal punishment