Citizens United v. FEC: This Supreme Court case in 2010 allowed corporations and unions to spend unlimited amounts of money on independent expenditures in support of or against political candidates.
Bipartisan Campaign Reform Act (BCRA): Also known as the McCain-Feingold Act, this legislation aimed at regulating campaign financing by placing restrictions on soft money contributions made to political parties.
Super PACs: Political Action Committees (PACs) that can raise unlimited funds from individuals, corporations, or unions for independent expenditures supporting or opposing specific candidates.