Cite as: 540 U. S. 93 (2003) Opinion of the Court vided "a constitutionally sufficient justification for the $1,000 contribution limitation." Id., at 26. We prefaced our analysis of the $1,000 limitation on expenditures by observing that it broadly encompassed every expenditure "'relative to a clearly identified candidate."' Id., at 39 (quoting 18 U. S. C. §608(e)(1) (1970 ed., Supp. IV)). To avoid vagueness concerns we construed that phrase to apply only to "communications that in express terms advocate the election or defeat of a clearly identified candidate for federal office." 424 U. S., at 42-44. We concluded, however, that as so narrowed, the provision would not provide effective protection against the dangers of quid pro quo arrangements, because persons and groups could eschew expenditures that expressly advocated the election or defeat of a clearly identified candidate while remaining "free to spend as much as they want to promote the candidate and his views." Id., at 45. We also rejected the argument that the expenditure limits were necessary to prevent attempts to circumvent the Act's contribution limits, because FECA already treated expenditures controlled by or coordinated with the candidate as contributions, and we were not persuaded that independent expenditures posed the same risk of real or apparent corruption as coordinated expenditures. Id., at 46-47. We therefore held that Congress' interest in preventing real or apparent corruption was inadequate to justify the heavy burdens on the freedoms of expression and association that the expenditure limits imposed. We upheld all of the disclosure and reporting requirements in the Act that were challenged on appeal to this Court after finding that they vindicated three important interests: providing the electorate with relevant information about the candidates and their supporters; deterring actual corruption and discouraging the use of money for improper purposes; and facilitating enforcement of the prohibitions in the Act. Id., at 66-68. In order to avoid an overbreadth problem, however, we placed the same narrowing construction on the