Whether the 1931 amendment to the United States Warehouse Act preempted Illinois regulation of federally licensed grain warehouses on subjects addressed by the federal Act, even when the state regulation might not actually conflict with federal requirements.
Holding
Yes. As to matters regulated by the Warehouse Act, Congress made federal authority exclusive for federally licensed warehouses; Illinois could not impose additional or supplementary regulation even if it would be consistent with federal policy.
Reasoning
The Court began with the usual presumption that Congress does not displace traditional state police powers unless it clearly and manifestly intends to do so. Grain-warehouse regulation was historically a state concern. But Congress may occupy a field completely, share regulatory authority with the States, or leave state regulation in place except where it conflicts with federal law. The controlling question was therefore Congress's purpose in the 1931 amendments.
The statutory history demonstrated a deliberate shift from the original 1916 Act. The original Act expressly preserved state warehouse laws and required federal licensees to bond their compliance with state as well as federal obligations. In 1931, Congress removed the state-law bond requirement and amended § 29 to provide that the Secretary of Agriculture's "power, jurisdiction, and authority" would be "exclusive" as to federally licensed persons while their licenses remained effective.
The legislative reports confirmed that Congress meant more than ordinary conflict preemption. Congress sought to make the federal Act independent of state law, protect the reliability and collateral value of federal warehouse receipts, and allow a warehouseman who elected a federal license to operate without interference from another regulatory agency. The statutory authorization for federal-state cooperation did not preserve concurrent regulation; it allowed coordination between separate federal and state systems.
Under this reading, the relevant test was not whether a particular Illinois order would contradict a federal command. Rather, the question was whether the subject on which Illinois sought to act was regulated in any way by the federal Act. If Congress had adopted a federal policy on that subject, the policy was exclusive, even if the federal scheme was less detailed or less demanding than Illinois's system.
Applying that test, the Court held that federal law displaced Illinois authority over the complaint's principal warehouse-regulation allegations. The federal Act and its regulations addressed rates through filing requirements and license suspension or revocation for unreasonable charges; nondiscrimination; disclosures concerning a warehouseman's ownership interest in stored grain; commingling and grading; prompt delivery; the condition and adequacy of warehouses; federal licensing; abandonment of licensed operations; and filing and posting rate schedules. Illinois therefore could not regulate those same matters for federally licensed warehouses.