"[W]hat if viability were instead agreed to be at 22 weeks gestation, as this study argues could be possible? If that occurs, then a '20-week fetal pain' ban is no longer an unconstitutional 'pre-viability' ban. Instead, it becomes a post-viability one. The ban could co-exist with Roe, without the '20-week' ban setting a new precedent that would override it. That would also remove the possibility of new, more restrictive, earlier gestation bans being introduced across the country."
read more at DAME Magazine.