Summary

Portrait of Stanley Forman Reed Stanley Forman Reed Mayo v. United States — Opinion of the Court

The District Court, one judge dissenting, enjoined the application of Florida law to the above described acts of the United States on the ground of federal immunity from state regulation.
Since the United States is a government of delegated powers, none of which may be exercised throughout the Nation by any one state, it is necessary for uniformity that the laws of the United States be dominant over those of any state. Such dominancy is required also to avoid a breakdown of administration through possible conflicts arising from inconsistent requirements.
Source: Wikisource

Portrait of Stanley Forman Reed Stanley Forman Reed Mayo v. United States — Opinion of the Court

Admittedly the state inspection service is to protect consumers from fraud but in carrying out such protection, the federal function must be left free. [11] This freedom is inherent in sovereignty. The silence of Congress as to the subjection of its instrumentalities, other than the United States, to local taxation or regulation is to be interpreted in the setting of the applicable legislation and the particular exaction.
Source: Wikisource

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