Cite as: 572 U. S. ____ (2014) 13 Opinion of ROBERTS, C. J. particular candidate may not also contribute to a singlecandidate committee for that candidate. §110.1(h)(1). Nor may an individual who has contributed to a candidate also contribute to a political committee that has supported or anticipates supporting the same candidate, if the individual knows that “a substantial portion [of his contribution] will be contributed to, or expended on behalf of,” that candidate. §110.1(h)(2). In addition to accounting for statutory and regulatory changes in the campaign finance arena, appellants’ challenge raises distinct legal arguments that Buckley did not consider. For example, presumably because of its cursory treatment of the $25,000 aggregate limit, Buckley did not separately address an overbreadth challenge with respect to that provision. The Court rejected such a challenge to the base limits because of the difficulty of isolating suspect contributions. The propriety of large contributions to individual candidates turned on the subjective intent of donors, and the Court concluded that there was no way to tell which donors sought improper influence over legislators’ actions. See 424 U. S., at 30. The aggregate limit, on the other hand, was upheld as an anticircumvention measure, without considering whether it was possible to discern which donations might be used to circumvent the base limits. See id., at 38. The Court never addressed overbreadth in the specific context of aggregate limits, where such an argument has far more force. Given the foregoing, this case cannot be resolved merely by pointing to three sentences in Buckley that were written without the benefit of full briefing or argument on the issue. See Toucey v. New York Life Ins. Co., 314 U. S. 118, 139–140 (1941) (departing from “[l]oose language and a sporadic, ill-considered decision” when asked to resolve a question “with our eyes wide open and in the light of full consideration”); Hohn v. United States, 524 U. S. 236, 251 (1998) (departing from a prior decision where it

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