In the case of F. Vitelli & Son v. United States (1918), the U.S Supreme Court ruled in favor of the government, upholding a lower court's decision that import duties were correctly assessed on goods imported by F. Vitelli & Son from Italy to America during World War I. The company argued that they should not be charged for these duties because their merchandise was shipped before war broke out between Italy and Germany, but arrived after hostilities began; thus, it fell under an exception clause in tariff laws which exempted goods "in transit" at such times from additional charges due to changes in duty rates caused by wartime conditions or legislation. However, the court held that this exemption did not apply since there was no change in duty rates resulting directly from war-related circumstances or laws; rather, any increase resulted solely from general revisions made to tariff schedules prior to outbreak of hostilities.

The dissenting opinion in the case of F. Vitelli & Son v. United States argued that the majority's decision to uphold a conviction for conspiracy to defraud the government by selling adulterated food was incorrect because it relied on an overly broad interpretation of what constitutes "fraud." The dissenting justices believed that while Vitelli & Son may have been guilty of violating food safety regulations, this did not necessarily equate to fraud against the government. They contended that there must be clear evidence showing intent to deceive or cheat, which they found lacking in this case. Furthermore, they expressed concern about potential implications for other businesses who might inadvertently violate complex regulations and then face severe criminal charges due to such expansive interpretations of fraud laws.