OK, let’s go through this one more time.
Half of all pregnancies end in miscarriages, usually in the first couple of weeks, before a woman even knows that she is pregnant. A miscarriage destroys an embryo. If you believe that every embryo is the moral equivalent of a fully-formed human being, miscarriages are like a perpetual natural disaster like a flood or an earthquake, and you should be urging a massive effort to reduce miscarriages as the best way to save millions of human lives a year. As far as I know, there is no such effort going on in the United States or elsewhere.
But perhaps your concern is not the number of slaughtered embryos, but rather the morality of intentionally killing them or—worse, in your view—intentionally creating and then killing them. In that case, your attention should be directed to fertility clinics, which routinely create multiple embryos for each human baby they wish to produce. They pick and choose among the embryos that seem healthiest, and typically implant several in the hope that one—and not more than one—will survive. Every year tens of thousands of human embryos are created and destroyed (or pointlessly frozen) in the everyday work of fertility clinics. There is no political effort to stop this work. President George W. Bush even praised the work of fertility clinics in his speech announcing the policy that virtually halted stem cell research for eight years. Advanced fertility techniques have brought happiness to thousands of couples who otherwise would probably be childless. They are a godsend that no politician would dare oppose.