Summary

Portrait of Harlan F. Stone Harlan F. Stone Parker v. Brown — Opinion of the Court

It is evident, therefore, that the Marketing Act contemplates the existence of state programs at least until such time as the Secretary shall establish a federal marketing program, unless the state program in some way conflicts with the policy of the federal act. The Act contemplates that each sovereign shall operate 'in its own sphere but can exert its authority in conformity rather than in conflict with that of the other'.
Source: Wikisource

Portrait of Harlan F. Stone Harlan F. Stone Parker v. Brown — Opinion of the Court

This distinction between local regulation of those who are not engaged in commerce, although the commodity which they produce and sell to local buyers is ultimately destined for interstate commerce, and the regulation of those who engage in the commerce by selling the product interstate, has in general served, and serves here, as a ready means of distinguishing those local activities which, under the Commerce Clause, are the appropriate subject of state regulation despite their effect on interstate commerce.
Source: Wikisource

Portrait of Harlan F. Stone Harlan F. Stone Parker v. Brown — Opinion of the Court

The declared objective of the California Act is to prevent excessive supplies of agricultural commodities from 'adversely affecting' the market, and although the statute speaks in terms of 'economic stability' and 'agricultural waste' rather than of price, the evident purpose and effect of the regulation is to 'conserve the agricultural wealth of the State' by raising and maintaining prices, but 'without permitting unreasonable profits to the producers'.
Source: Wikisource

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