Summary

Portrait of Hugo Black Hugo Black United States Marcus v. Hess — Opinion of the Court

The short of it is that where two such proceedings merely carry out the remedies which Congress has prescribed in advance for a wrong, they do not twice put a man in jeopardy for the same offense. Congress thereby merely allows the comprehensive penalties which it has imposed to be enforced in separate suits instead of in a single proceeding. By doing this Congress does not impose more than a single punishment. And the double jeopardy clause does not prevent Congress from prescribing such a procedure for the vindication of punitive remedies.
Source: Wikisource

Portrait of Hugo Black Hugo Black United States Marcus v. Hess — Opinion of the Court

If ever we are justified in reading a statute, not narrowly as through a keyhole, but in the broad light of the evils it aimed at and the good it hoped for, it is here. The only disadvantage therefrom falls on one who sues, not to be made whole for injuries he has sustained, or to recover for goods he has delivered, or services he has performed, but solely to make profitable to himself the wrong done by others.
Source: Wikisource

Portrait of Hugo Black Hugo Black United States Marcus v. Hess — Opinion of the Court

We should, of course, fully sustain informers in proceedings where Congress has utilized their self-interest as an aid to law enforcement. Informers who disclose law violations even for the worst of motives play an important part in making many laws effective. But there is nothing in the text or history of this statute which indicates to me that Congress intended to enrich a mere busybody who copies a Government's indictment as his own complaint and who brings to light no frauds not already disclosed and no injury to the Treasury not already in process of vindication.
Source: Wikisource

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