Repealing Roe won't make abortion illegal, so that's not a barrier.
From my understanding, the state legislation outlawing abortion has always already existed.
The Roe Vs Wade superseded that state legislation, but does not make it disappear.
So if Roe Vs Wade is reversed. then the state legislation outlawing abortion automatically applies once again.
And 13 states already have passed legislation outlawing abortion if the Roe Vs Wade decision is ever reversed.
{...
13 states have passed so-called 'trigger laws,' bans designed to go into effect if Roe v. Wade is overturned
By Elizabeth Wolfe, CNN
Updated 3:00 PM ET, Tue May 3, 2022
(CNN)Many Americans anxiously anticipating the Supreme Court's decision on
Roe v. Wade may have been offered a glimpse of what's to come when Politico revealed
a draft Supreme Court opinion Monday night that would upend the landmark abortion rights case.
Though the unearthing of the draft has no immediate effect on abortion access, the preliminary opinion, which
was confirmed to be authentic by the court, would overturn
Roe v. Wade if a majority of justices decided to join, leaving state legislators to weigh their own abortion policies.
...}
Many Americans anxiously anticipating the Supreme Court's decision on Roe v. Wade may have been offered a glimpse of what's to come when Politico revealed a draft Supreme Court opinion Monday night that would upend the landmark abortion rights case.
www.cnn.com