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Law

Parens Patriae in State Litigation Against Federal Agencies

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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.

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