randomWalks

"The idea that large contributions to a national party can corrupt or create the appearance of corruption of federal candidates and officeholders is neither novel nor implausible," the majority said. "There is substantial evidence in these cases to support Congress' determination that contributions of soft money give rise to corruption and the appearance of corruption."

The court said Congress also has power to act against all or any "circumventions" of campaign laws, whether in the form of "soft money" or sham "issue ads."

The justices rejected as "unpersuasive" arguments that the new provisions intrude on constitutionally protected rights of free speech and free political association.

Washington Post: Supreme Court Upholds Political Money Law.