The chairman of the Federal Communications Commission has opened an investigation into NPR and PBS over the public broadcasters’ airing of commercials. Brendan Carr, President Donald Trump’s pick to lead the agency,

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

“PBS is proud of the noncommercial educational programming we provide to all Americans through our member stations,” Kerger said in a statement (via NPR). “We work diligently to comply with the FCC’s underwriting regulations and welcome the opportunity to demonstrate that to the Commission.”