NBC News and news services updated 2 hours, 30 minutes ago

WASHINGTON - In a landmark ruling, the U.S. Supreme Court on Thursday struck down laws that banned corporations from using their own money to support or oppose candidates for public office.

By 5-4 vote, the court overturned federal laws, in effect for decades, that prevented corporations from using their profits to buy political campaign ads. The decision, which almost certainly will also allow labor unions to participate more freely in campaigns, threatens similar limits imposed by 24 states.

It leaves in place a ban prohibiting corporations and unions from directly contributing funds to candidates for any use.


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