530 U.S. 363 (2000) Cited 983 times 9 Legal Analyses
Holding that a state Burma sanctions bill conflicted with a federal Burma sanctions bill because it undermined Congress's delegation to the President of "flexible and effective authority" to adjust all sanctions in response to changing conditions
471 U.S. 707 (1985) Cited 1,191 times 3 Legal Analyses
Holding local health ordinance not preempted because "the regulation of health and safety matters is primarily, and historically, a matter of local concern"
Holding that for an act to be "unfair," it must "threaten" a violation of law or "violate the policy or spirit of one of those laws because its effects are comparable to or the same as a violation of the law"
U.S. Const. art. I, § 8 Cited 6,969 times 27 Legal Analyses
Granting Congress the power to “provide for the common Defence,” to “regulate Commerce with foreign Nations,” and to “establish an uniform Rule of Naturalization”