Law
Parens Patriae in State Litigation Against Federal Agencies
Quick fact
In 2007, the U.S. Supreme Court allowed Massachusetts to sue the EPA over greenhouse gas regulation, invoking a special form of parens patriae based on the state's ownership of coastal land, even though individual citizens could not have sued.
Why this is interesting
Could your state sue the federal government on behalf of you and every other resident, even if you've suffered no specific injury? The answer depends on a centuries-old doctrine called parens patriae.
Read the full explanation
Understanding Parens Patriae in State Litigation Against Federal Agencies
Imagine a parent suing a bully on behalf of their child—even if the child didn't sue themselves. That's the essence of parens patriae: 'parent of the country.' States have used this ancient principle to sue the federal government, claiming to protect the health and welfare of their residents. In federal court, however, states must jump the same hurdles as any plaintiff: they need a concrete injury, causation, and redressability—unless they can show a 'quasi-sovereign' interest that allows them to act on behalf of their citizens. But the Supreme Court has drawn a line: states can't assert parens patriae when the only injury is to individual citizens, because then the state is just a collection of individuals. Instead, states must show that the harm threatens their own sovereign interests—like coastal land or wildlife—which elevates the suit beyond a class action.
A deeper explanation
The doctrine of parens patriae traces back to English common law, where the Crown acted as guardian for those unable to care for themselves (like children and the insane). In the U.S., states inherited this role, allowing them to sue to protect the 'quasi-sovereign' interests of their residents—like public health, natural resources, and general welfare. However, when states sue the federal government, the Supreme Court has imposed strict limits. The key case is Massachusetts v. EPA (2007), where the Court held that Massachusetts had standing to challenge the EPA's refusal to regulate greenhouse gases. The Court reasoned that because Massachusetts owned a substantial portion of coastal land, it had a concrete, particularized injury from rising sea levels. This 'sovereign interest' allowed the state to invoke parens patriae without meeting the usual requirement that each citizen have a separate injury. Critics argue this blurs the line between state and individual rights, but defenders say it protects states' role as guardians of their citizens when the federal government fails. The doctrine's boundary: it doesn't apply when a state merely sues on behalf of residents for monetary damages, as the Court rejected in Hawaii v. Standard Oil (1972). So, parens patriae works only when a state has a 'special solicitude'—a direct sovereign interest—in the dispute.