Here:

cert petition

Questions presented:

1. Whether the Eighth Circuit erred in holding, in conflict with decisions of this Court and three other courts of appeals, that the possibility of filing a separate mandamus action was in and of itself “sufficient” to provide an “adequate opportunity” requiring Younger abstention, where plaintiffs had no opportunity to challenge the constitutionality of the preliminary hearing procedure in the course of the state’s abuse and neglect proceedings?
2. Whether the court of appeals erred in holding, in conflict with three courts of appeals, that the “extraordinary circumstances” exception to Younger abstention applies only to flagrantly and patently unconstitutional statutes, but not to flagrantly and patently unconstitutional policies, and in concluding that separating children from their parents for sixty days with no notice or opportunity to be heard inflicted no irreparable harm?

Lower court materials here.