463 U.S. 29 (1983) Cited 6,639 times 50 Legal Analyses
Holding that " `settled course of behavior embodies the agency's informed judgment that, by pursuing that course, it will carry out the policies [of applicable statutes or regulations]'"
462 U.S. 87 (1983) Cited 1,149 times 4 Legal Analyses
Holding that "a reviewing court must generally be at its most deferential" when examining an agency decision made "within its area of special expertise, at the frontiers of science"
547 U.S. 715 (2006) Cited 399 times 230 Legal Analyses
Holding that "[t]he use of the definite article and the plural number ('waters')" made clear that § 1362 is limited to "fixed bodies of water," such as "streams, ... oceans, rivers, lakes," and does not extend to "ordinarily dry channels through which water occasionally or intermittently flows"