The federal election campaign act (feca allowed corporations, labor unions, and special interest groups to set up national to raise money for candidates.

I am definitely sure that the answer should be: The federal election campaign act (feca) allowed corporations, labor unions, and special interest groups to set up national political party caucuses to raise money for candidates. This act is needed to give forth of contributions for federal campaigns by creating Federal Election Commission. The act was improved later to set up to limit the number of contributions. Every campaign should have enough resources to participate in election, that's why this act was created.