vermillion,
The following quote from Roe v. Wade shows that the U.S. Supreme Court viewed conception to be synonymous with fertilization, rather than with implantation.
QUOTE
The Aristotelian theory of "mediate animation," that held sway throughout the Middle Ages and the Renaissance in Europe, continued to be official Roman Catholic dogma until the 19th century, despite opposition to this "ensoulment" theory from those in the Church who would recognize the existence of life from the moment of conception. 61 The latter is now, of course, the official belief of the Catholic Church. As one brief amicus discloses, this is a view strongly held by many non-Catholics as well, and by many physicians. Substantial problems for precise definition of this view are posed, however, by new embryological data that purport to indicate that conception is a "process" over time, rather than an event, and by new medical techniques such as menstrual extraction, the "morning-after" pill, implantation of embryos, artificial insemination, and even artificial wombs.
The court also refers to Dorland's Medical Dictionary as its source of medical definitions in this case.
Dorland's defines conception as "the onset of pregnancy, marked by fertilization of an oocyte by a sperm or spermatozoon; formation of a visible zygote." Notably, the Supreme Court retains this definition even in view of the "morning-after" pill.
As a side note:
Notably, as I have pointed out before, the use of a mega-dose of the chemicals found in ordinary birth control pills as a "morning-after" pill was known in the 1960s when the birth control pill was introduced. However, it was also known that the pills were ineffective compared to other methods, and that inevitable reliance on the pills would lead statistically to more unwanted pregnancies. For this reason, and to conceal the fact that the chemicals in the ordinary birth control pill had an antinidatory effect (an abortive effect of terminating pregnancy between fertilization and implantation), knowledge of the morning-after pill was suppressed by the medical establishment, including the American College of Obstetricians and Gynecologists, the American Medical Association, and the Food and Drug Administration. In fact, these three authorities deny to this day that the chemicals in ordinary birth control pills have an antinidatory effect, even though, by contradiction, they admit the chemicals have such an effect when called a "morning-after" pill instead.
Overun by abortion groups, the reason why the ACOG, AMA, and FDA have decided to advocate the morning-after pill is because an impending ban on partial-birth abortion threatens to make abortion murder at the latest stage of pregnancy. But, since there is no where to draw the line, this will lead to a ban going all the way back to fertilization. So to counter this domino effect, abortion advocates have tried to sell the public on the idea that life is meaningless before implantation and that neither conception nor pregnancy has even occurred. This way, they believe the public will find it hard to draw the line going in the other direction. Another impetus for the morning-after pill movement has been the fact that the abortion clinic industry has been facing a loss in abortion sales due to RU-486 (Mifeprex) abortions and changing trends. Since it is easy to confuse people about the effectiveness of the morning-after pill, which per 100 woman-years of exclusive use is less effective than even the dismal withdrawal method, popular reliance on the pill will mean a surprisingly greater number of unwanted pregnancies.
Led by Planned Parenthood, the abortion clinic industry drools over the thought of these pregnancies happening as a source of increased sales. As a case in point, neither the ACOG, AMA, FDA, nor Planned Parenthood has as yet disavowed the morning-after pill known by the brand name Preven, even though Preven is twice as ineffective as the brand known as Plan B in eliminating pregnancy that would otherwise last past implantation. Given reliance on the morning-after pill, that means twice the number of unexpected pregnancies lasting past implantation using Preven than with Plan B. The abortion industry has been drooling over the thought of these pregnancies too much to let the public know the truth. In fact, they even let rape victims use Preven unsuspectingly, because they do not want the general public to make informed choices that could reduce sales for the abortion clinic industry. How's that for keeping "Choice" alive? In other words, advocacy of the morning-after pill has made the true colors of the abortion industry show.
Remember, the abortion clinic industry feels very threatened by chemical abortion methods, so they would not be advocating the morning-after pill if it was an effective chemical abortion method prior to implantation. They might give you a song and dance about new definitions of pregnancy and conception, but they know the facts of life are that when sperm meets egg it means you are pregnant, and that if the pregnancy is unwanted, you may turn to an abortion clinic and increase their sales. For this reason, the abortion clinic industry, led by Planned Parenthood, which runs the nation's largest chain of abortion clinics, has not disavowed Preven over Plan B, even though it is known in medical circles that Preven is half as likely to eliminate the possibility of having a pregnancy that lasts past implantation as compared to Plan B.
Another point is that Preven makes women especially sick, and so, given that 1-out-of-4 women who would have gotten pregnant will stay pregnant past implantation despite using Preven, these women may choose not to have an RU-486 (Mifeprex) abortion once they find out they remained pregnant, because they will want to avoid feeling sick again from taking more chemicals. If they choose an abortion clinic instead keeping the baby, this again will increase sales for the abortion clinic industry.
Answer me this: Since the Supreme Court in Roe v. Wade recognized that conception, meaning fertilization, is strongly held by many to signify the existence of life, then why would it be fair to the public to tell people the morning-after pill does not cause abortions based on an antinidatory effect? Clearly, the ACOG, AMA, and FDA must be held accountable for scheming to defraud the public of an ethically competent awareness. This is a misinformation campaign.