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

Elizabeth Warren, Bernie Sanders and Ron Wyden also question whether Skydance was involved in discussions to cancel The Late Show with Stephen Colbert

If it were, say, just a decade ago, cachet and power would be conferred on Skydance founder and CEO David Ellison, the soon-to-be chief of Paramount and its once-holy grail of TV news, CBS.

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

David Letterman weighed in on the “Late Show With Stephen Colbert” cancellation on Tuesday, albeit in his own very Letterman-esque way. The former “Late Show” host and originator of the CBS program posted a 20-minute compilation of clips from his show where he made fun of the network, captioning the YouTube video, “You can’t spell CBS without BS.”

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.