Brian Duignan
Encyclopædia Britannica Editor
Brian Duignan is a senior editor at Encyclopædia Britannica. His subject areas include philosophy, law, social science, politics, political theory, and religion.
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Citizens United v. Federal Election Commission, case in which the U.S. Supreme Court on January 21, 2010, ruled (5–4) that laws that prevented corporations and unions from using their general treasury funds for independent “electioneering communications” (political advertising) violated the First…
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