The way I read the abortion decisions and the homosexuality decisions by the SCOTUS, they're saying that neither the federal government NOR the states can outlaw consensual homosexual activity or first trimester abortions.
As decided by one branch of the federal government, overthrowing more than 200 years of precedent.
Nevertheless, saying that neither the federal government nor state governments have the power to regulate "X" conduct is the exact opposite of regulating "X" conduct.