A number of studies in the 1970s and 80s concluded that emergency contraception could cause changes in the endometrium[109] that would prevent implantation of an early-stage embryo in theuterus. This research led many pro-life advocates, who believe that pregnancy begins at fertilization, to oppose ECPs as an abortifacient.
In recent years—especially in light of U.S. ethical controversy over the research's claims—the scientific community has begun to critically reevaluate the early studies, introducing doubt into the argument that ECPs prevent implantation. Recent studies in rats and monkeys have shown that post-ovulatory use of progestin-only and combined ECPs have no effect on pregnancy rates.[110][111]Studies in humans have shown that the rate of ovulation suppression is approximately equal to the effectiveness of emergency contraceptive pills,[112][113] suggesting that might be the only mechanism by which they prevent pregnancy.
However, these studies have also shown that, in women who ovulate despite taking ECP before ovulation, there are changes in certain hormones such as progesterone and in the length of luteal phase.[112] These secondary changes might inhibit implantation in cases where fertilization occurs despite ECP use. Because of the difficulty of studying embryos inside the uterus and fallopian tubes prior to implantation, both sides of this debate concede that completely proving or disproving the theory may be impossible.[114][110]
When used as a regular method of contraception, IUDs have been proven to act primarily through spermicidal and ovicidal mechanisms, but it is considered possible that these same mechanisms are also harmful to embryos that have not yet implanted.[115]
Hormonal progestin-only and combined estrogen-progestin emergency contraceptives such as Yuzpe regimen or Plan B are different from the anti-hormonal drug mifepristone (also known as Mifeprex and RU-486), an abortifacient which can induce abortion if taken after implantation. Yuzpe and progestin-only emergency contraception will have no effect if taken after implantation"
“The proposed rule change would make it possible to deny federal funding to organizations who discriminate against hiring people who have objections to providing abortions or drugs which cause abortions.”
Not quite. The proposed rule would threaten federal funding for family planning programs who refused to hire people who would refuse to provide abortions or birth control. This has nothing to do with those who simply have objections to these procedures. It has everything to do with employees who would refuse to provide these services, even at the patient's request.
But I agree that bloc's title is fairly misleading.