Exxon Mobil Corporation v. State of New Hampshire

U.S. Supreme Court

Question(s) Presented

1. Whether the Due Process Clause permits a state to use parens patriae standing and statistical proof to recover hundreds of millions of dollars in a “Trial by Formula” that eliminated individualized defenses that have uniformly prevented courts from certifying comparable cases as class actions and allowed the state to recover for contamination of unidentified wells and wells that do not yet exist. 

2. Whether a state-law tort duty is preempted when it retroactively outlaws the only feasible option for complying with a federal mandate.

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