WASHINGTON – In a dramatic upheaval that sharply divided the U.S. Supreme Court, a 5-4 majority ruled yesterday that under the First Amendment Congress may not bar corporations and unions from using their own money to make independent expenditures to support or oppose political candidates.

The Court in Citizens United v. Federal Election Commission, 08-205, ruled that the ban on direct corporate expenditures before elections, with criminal penalties, is a powerful chill on legitimate political speech.

See the transcript of the oral arguments in this case