Trump FCC chair targets NPR, PBS for investigation ahead of Congressional threats to defund

The Federal Communications Commission (FCC) launched an investigation into media outlets PBS and National Public Radio (NPR) over member stations potentially airing "prohibited commercial advertisements," according to a letter obtained by The New York Times. 

"I am concerned that NPR and PBS broadcasts could be violating federal law by airing commercials," FCC chair Brendan Carr wrote, according to the Times. "In particular, it is possible that NPR and PBS member stations are broadcasting underwriting announcements that cross the line into prohibited commercial advertisements."

The FCC allows businesses to support noncommercial radio and television stations — such as NPR, PBS or college radio stations — via on-air announcements known as underwriting sponsorships. The sponsorships, though similar to advertisements, face different FCC rules than typical TV or radio ads.