(CNN) – Rupert Murdoch's News Corporation took heat last summer after it was revealed the media conglomerate steered $1 million to the Republican Governor's Association.
But it turns out that was only part of the story. According to Politico, the corporation that owns Fox News has also donated $1 million to the U.S. Chamber of Commerce - a pro-business lobby that heavily donates to Republican candidates across the country.
The Chamber of Commerce is a 501(c) organization and as such does not have to publicly disclose the sources of its contributions. News Corp. is also not legally required to disclose its donations.
Contacted by CNN, Chamber of Commerce spokesman J.P. Fielder declined to discuss the donation.
"The Chamber's membership includes a broad cross-section of industries and sectors, as well as business large and small," he said. "We don't discuss specific membership issues."
A spokesman for News Corp. declined to comment.
News Corporation's contribution to the RGA, however, sparked outrage among Democrats and media critics, who said Fox News could no longer claim neutrality when it covers the midterm elections.
News Corp. spokesman Jack Horner defended the RGA donation in a statement to CNN.
"News Corporation believes in the power of free markets, and the RGA's pro-business agenda supports our priorities at this most critical time for our economy," he said.
A CNN August review of several media corporations' political donations showed that all of them - including CNN's parent company Time Warner - have given to both Republican and Democratic organizations, but in smaller amounts than News Corp.