Cite as: 558 U. S. ____ (2010) 69 Opinion of STEVENS, J. of 99.97% independent expenditures ($3 million) and 0.03% direct contributions ($1,000)—as a “contribution.” See, e.g., id., at ___ (slip op., at 1) (“The basis for the [recusal] motion was that the justice had received cam­ paign contributions in an extraordinary amount from” Blankenship); id., at ___ (slip op., at 3) (referencing “Blankenship’s $3 million in contributions”); id., at ___ (slip op., at 14) (“Blankenship contributed some $3 million to unseat the incumbent and replace him with Benjamin”); id., at ___ (slip op., at 15) (“Blankenship’s campaign con­ tributions . . . had a significant and disproportionate influence on the electoral outcome”). The reason the Court so thoroughly conflated expenditures and contributions, one assumes, is that it realized that some expenditures may be functionally equivalent to contributions in the way they influence the outcome of a race, the way they are interpreted by the candidates and the public, and the way they taint the decisions that the officeholder thereafter takes. Caperton is illuminating in several additional respects. It underscores the old insight that, on account of the ex­ treme difficulty of proving corruption, “prophylactic meas­ ures, reaching some [campaign spending] not corrupt in purpose or effect, [may be] nonetheless required to guard against corruption.” Buckley, 424 U. S., at 30; see also Shrink Missouri, 528 U. S., at 392, n. 5. It underscores that “certain restrictions on corporate electoral involve­ ment” may likewise be needed to “hedge against circum­ vention of valid contribution limits.” McConnell, 540 U. S., at 205 (internal quotation marks and brackets omitted); see also Colorado II, 533 U. S., at 456 (“[A]ll Members of the Court agree that circumvention is a valid theory of corruption”). It underscores that for-profit cor­ porations associated with electioneering communications will often prefer to use nonprofit conduits with “mislead­ ing names,” such as And For The Sake Of The Kids, “to

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