Abortion has been around for a hell of a lot longer than 40 years and will continue in one form or another if it is outlawed
Did right-to-lifers consider a law that required periodic urine testing of all birthing age women? Those found to be positive would be monitored to ensure that they didn't secretly abort. Follow up NEGATIVE tests would be prima fasciae evidence of abortion and a jail sentence would result . Also, all "spontaneous" abortions would be considered induced and likewise a jail sentence would follow.