Summary

Portrait of Earl Warren Earl Warren Pereira v. United States — Opinion of the Court

The substantive offenses with which petitioners were charged do not require more than one person for their commission; either could be accomplished by a single individual. The essence of the conspiracy charge is an agreement to use the mails to defraud and/or to transport in interstate commerce property known to have been obtained by fraud. Pereira's conviction on the substantive counts does not depend on any agreement, he being the principal actor. Similarly, Brading's conviction does not turn on the agreement.
Source: Wikisource

Portrait of Earl Warren Earl Warren Pereira v. United States — Opinion of the Court

Here, the scheme to defraud is established, and the mailing of the check by the bank, incident to an essential part of the scheme, is established. There remains only the question whether Pereira 'caused' the mailing. That question is easily answered. Where one does an act with knowledge that the use of the mails will follow in the ordinary course of business, or where such use can reasonably be foreseen, even though not actually intended, then he 'causes' the mails to be used.
Source: Wikisource

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