How did the Citizens United ruling influence campaign finance in the United States?
A.
Small donors can contribute unlimited funds to influence elections.
B.
Public funding of campaigns allows the use of unlimited taxpayer funds.
C.
Unions can contribute unlimited funds to candidates to influence elections.
D.
Super PACs can contribute unlimited funds to support a candidate independently.
D. Super PACs can contribute unlimited funds to support a candidate independently.
The Supreme Court's Citizens United ruling in 2010 eliminated limits on independent expenditures by outside groups, including corporations and unions, in political campaigns. This led to the creation of Super PACs, which can raise and spend unlimited amounts of money to support a candidate independently. This decision significantly changed the landscape of campaign finance in the United States.