being in Australia, these are the kinds of US policy things that might not make it across the sea but in the 1960s a number of laws were passed bolstering marriage privacy, child rearing privacy, etc.
It was a way of keeping the government out of the kinds of family things where there is variety but nothing criminal like “how to raise your kids”.
Roe v Wade was one of the rulings clustered together with these over the course of a few years.
Griswald v Connecticut, which was about the right to contraception in marriage, is a keystone they REALLY want to get rid of because it supported other rulings:
3.1 Right to birth control for unmarried couples, 1972
3.2 Right to abortion for any woman, 1973
3.3 Right to contraception for juveniles at least 16 years of age, 1977
3.4 Right to homosexual relations, 2003
3.5 Right to same-sex marriage, 2015
So by turning Roe v Wade to the states, it will quickly turn same-sex marriage to the states, homosexuality to the states, rights to contraceptives to the states, and there’s other but these are the biggies they want to remove