A) Citizens United v. Federal Election Commission CORRECT This 2010 Supreme Court decision is the correct answer because it struck down restrictions on independent political expenditures by corporations and unions, thereby enabling unlimited campaign spending by outside groups. The Court reasoned that such spending is a form of protected speech under the First Amendment, and that the government's interest in preventing corruption did not justify limiting independent expenditures. This ruling gave rise to Super PACs and other advocacy organizations that can raise and spend unlimited funds to support or oppose candidates, fundamentally altering the campaign finance landscape.
B) Regents of the University of California v. Bakke INCORRECT This 1978 case concerned affirmative action in higher education, specifically the use of racial quotas in admissions. The Court ruled that while race could be considered as one factor in admissions, strict quotas were unconstitutional. This decision has no bearing on campaign spending or political advocacy, making it an incorrect choice for this question.
C) District of Columbia v. Heller INCORRECT This 2008 case addressed the Second Amendment right to keep and bear arms, ruling that individuals have the right to possess firearms for self-defense in their homes. While a significant Second Amendment precedent, it is unrelated to campaign finance or the regulation of political spending, so it does not fit the question's context.
D) Korematsu v. United States INCORRECT This 1944 case upheld the internment of Japanese Americans during World War II, a decision that has been widely criticized and formally condemned in recent years. It deals with civil liberties during wartime and executive power, not with campaign spending or the First Amendment rights of advocacy groups, making it an incorrect answer.
