 Having survived the Keating Five scandal, McCain made attacking what he saw as the corrupting influence of big money on American politics his signature issue.Starting in late 1994 he worked with Democratic Wisconsin Senator Russ Feingold on campaign finance reform; their McCain-Feingold bill would attempt to put limits on "soft money", funds that corporations, unions, and other organizations could donate to political parties, which would then be funneled to political candidates in circumvention of "hard money" donation limits.From the start, McCain and Feingold's efforts were opposed by some of the interests targeted, by incumbents in both parties, by those who felt spending limits impinged on free political speech, and by those who wanted to lessen the power of what they saw as media bias.