communications that expressly advocate the election or defeat of a clearly identified candidate.” Id., at 80. Our opinion in Buckley addressed issues that primarily related to contributions and expenditures by individuals, since none of the parties challenged the prohibition on contributions by corporations and labor unions. We noted, however, that the statute authorized the use of corporate and union resources to form and administer segregated funds that could be used for political purposes. Id., at 28-29, n.31; see also n.3, supra. Three important developments in the years after our decision in Buckley persuaded Congress that further legislation was necessary to regulate the role that corporations, unions, and wealthy contributors play in the electoral process. As a preface to our discussion of the specific provisions of BCRA, we comment briefly on the increased importance of “soft money,” the proliferation of “issue ads,” and the disturbing findings of a Senate investigation into campaign practices related to the 1996 federal elections. Soft Money Under FECA, “contributions” must be made with funds that are subject to the Act’s disclosure requirements and source and amount limitations. Such funds are known as “federal” or “hard” money. FECA defines the term “contribution,” however, to include only the gift or advance of anything of value “made by any person for the purpose of influencing any election for Federal office.” 2 U.S.C. § 431(8)(A)(i) (emphasis added). Donations made solely for the purpose of influencing state or local elections are therefore unaffected by FECA’s requirements and prohibitions. As 208