Final answer:
In Citizens United v. FEC (2010), the Supreme Court ruled that corporations can make unlimited independent expenditures in political campaigns.
Step-by-step explanation:
In the case of Citizens United v. FEC (2010), the United States Supreme Court ruled that corporations can make unlimited independent expenditures in support of or in opposition to political candidates. The Court held that restrictions on corporate political spending violated the First Amendment right to free speech. This decision allowed corporations and labor unions to spend unlimited amounts of money on political campaigns as long as the spending is independent of the candidates.