The 1996 debate between Republicans and Democrats regarding campaign finance reform resulted from what?

One of the main subjects that were included in the 1996 debate between Republicans and Democrats was the campaign finance reform. In addition, the said policy was formulated in order to address the regulation of the campaign funds government officials spend during their election campaigns.

The 1996 election was between Bill Clinton and Dole, so the answer should be that they were worried Clinton was getting his funds through unnatural means.