Cite as: 525 U. S. 366 (1999)
Opinion of the Court
The need for both limitations is exemplified by Louisiana Pub. Serv. Comm'n v. FCC, 476 U. S. 355 (1986), where the FCC claimed authority to issue rules governing depreciation methods applied by local telephone companies.7 The Commission supported its claim with two arguments. First, that it could regulate intrastate because Congress had intended the depreciation provisions of the Communications Act to bind state commissions—i. e., that the depreciation provisions "applied" to intrastate ratemaking. Id., at 376-377. We observed that "[w]hile it is, no doubt, possible to find some support in the broad language of the section for respondents' position, we do not find the meaning of the section so unambiguous or straightforward as to override the command of § 152(b) . . . ." Id., at 377. But the Commission also argued that, even if the statute's depreciation provisions did not apply intrastate, regulation of state depreciation methods would enable it to effectuate the federal policy of encouraging competition in interstate telecommunications. Id., at 369. We rejected that argument because, even though the FCC's broad regulatory authority normally would have been enough to justify its regulation of intrastate depreciation methods that affected interstate commerce, see id., at 370; cf. Shreveport Rate Cases, 234 U. S. 342, 358 (1914), § 152(b) prevented the Commission from taking intrastate action solely because it furthered an interstate goal. 476 U. S., at 374.8
7 We discuss the Louisiana case because of the light it sheds upon the meaning of § 152(b). We of course do not agree with Justice BreyerTMs contention, post, at 421, that the case "raised a question almost identical to the one before us." That case involved the Commission's attempt to regulate services over which it had not explicitly been given rulemaking authority; this one involves its attempt to regulate services over which it has explicitly been given rulemaking authority.
8 Because this reasoning clearly gives separate meanings to the provisions "apply" and "give the Commission jurisdiction," we do not understand why Justice Thomas asserts, post, at 409, that we have not given effect to every word that Congress used. Nor do we agree with Justice
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