To this underlying reason we must add another: the great confusion sown by the information furnished by various researchers and media, who categorically state that levonorgestrel acts solely by preventing ovulation, so therefore it would not have an abortive effect. This statement, which the Bioethics Observatory and also many in research have repeatedly refuted, is supported by manufacturers, various groups that advocate contraception, and even by some media calling themselves Catholic, such as the National Catholic Reporters (NCR, Kansas City, Missouri), which last 31 March published an article stating that Plan B does not cause abortions.
Thus, it seems that the long history of the legalisation of the use of the morning-after pill without a prescription in the United States has come to an end, in our opinion a sad end, unless President Obama’s Justice Department appeals against the decision taken by the judge last 13th April, which seems highly unlikely.
Finally, it should be remembered that the ability to dispense the morning-after pill without a prescription has failed to accomplish any of the proposed objectives with its use in Western countries, as it has not managed to reduce the number of teenage pregnancies or abortions, but it has increased, according to various studies, the incidence of sexually transmitted diseases. They will probably see this same trend in the US when they analyse the consequences of this liberalisation.
https://bioethicsobservatory.org/2013/06/a-short-history-of-the-morning-after-pill-in-the-united-states/1108/
Can NOT find the Morning After Pill patent
https://www.uspto.gov/
The Morning-After Pill: A Well-Kept Secret
https://www.nytimes.com/1993/01/10/magazine/the-morning-after-pill-a-well-kept-secret.html