New FCC Chairman Brendan Carr has ordered the agency to launch an investigation into underwriting sponsorship announcements that air during PBS and NPR programming, suggesting that they may cross the line “into prohibited commercial advertisements.

The investigation will revolve around NPR and PBS airing sponsorships across their 1,500-plus member stations, FCC Chairman Brendan Carr said.

Federal Communications Commission Chairman Brendan Carr said he is launching investigations into both PBS and NPR, in the hopes of helping Congress defund the public broadcasters. His basis for the investigation stems from what he alleges are potentially unlawful commercials.