The supreme court's landmark decision in dramatically increased the flow of money from interest groups, 527s, and super pacs into politics and electoral campaigns.

Citizens United vs. Federal Election Commission (2010). The 5-4 decision that ensued ruled against laws prohibiting unions and corporations from using their general treasury funds on political advertisements. The rationale behind this decision is that it was a fundamental violation of the First Amendment's right to free speech, which of course allows for the right for individuals to express their views, opinions, and support of various causes without fear of retribution from the government. The decision was highly controversial and has unquestionably increased both the scope and influence of superPACS and special interest groups.