The Supreme Court's Decision in Buckley V

The Supreme Court's decision in Buckley v. Valeo (1976) , was significant because it

A) rejected the idea that the federal government could place any limits on campaign contributions or spending.
B) introduced the idea that money counts as "speech" under the Constitution.
C) affirmed the idea that all viable candidates for federal office should have the opportunity to receive federal funding for their campaigns.
D) established the idea that corporations had the same free speech rights as individuals under the First Amendment.