Billionaire Donald Trump gave $10,000 to California Gov. Arnold Schwarzenegger to help pay off his campaign debts, a little more than a month after the governor guest-starred on Trump's TV show "The Apprentice: Los Angeles," according to a campaign filing.

In an episode that aired March 18, Schwarzenegger hosted five of the show's contestants in his private conference room at the state Capitol in Sacramento.

The governor denies any link between the donation and the television appearance, but some political watchdog groups are skeptical.