Under 2010's Citizens United vs. the FEC, companies are allowed to use corporate funds for "independent electioneering" that isn't coordinated with a campaign.
Two business executives were charged in Alexandria, Va., with violating federal law.
Executives William P. Danielczyk, Jr., and Eugene R. Biagi were charged with funneling money from their financial firm through third-party donations -- channeled through their employees -- to the Hillary Clinton campaigns for the U.S. Senate and the presidency, SCOTUSBLOG.com reported.
Citing free speech, the executives wanted the U.S. Supreme Court to reverse an appeals court decision upholding the ban on direct corporate contributions.
The justices refused in a one-line order without comment.