In meeting with FCC officials, Skydance's David Ellison promised that CBS's "editorial decision-making reflects the varied ideological perspectives of American viewers."

CBS News has been dogged for decades by allegations of liberal bias, with the controversies over its coverage decisions intensifying over the last year.

Liberal lawmakers asked David Ellison, chief executive of Skydance Media, which is set to merge with CBS owner Paramount, about alleged promises on conservative ad content.

Ellison "discussed Skydance’s commitment to unbiased journalism and its embrace of diverse viewpoints" in the meeting, as well as concerns about Tencent's stake in the company.

David Ellison met this week with Brendan Carr and FCC staffers to discuss the Paramount Global merger which is still under agency review.

His possible return back across the pond, reported by Puck News, comes amid speculation that Skydance CEO David Ellison has been wooing Bari Weiss, co-founder of news site Free Press, to join the struggling network.

David Rhodes, Sky News executive chairman and former CBS News head, is in talks to run CBS News again if the Skydance acquisition of the broadcaster's owner Paramount Global closes, digital news website Puck reported on Friday.