An analysis by NBC News found the court has effectively dismantled the ability to file lawsuits against federal officials accused of violating constitutional rights.
The case concerns Michael Johnson, a prisoner with mental health issues, who was denied almost all opportunities to exercise for three years while in solitary confinement.
The case will test how far the court's conservative majority is willing to go in interpreting the scope of its 2022 ruling that expanded gun rights outside the home.