Media activist Jeff Chester of the Center for Digital Democracy has asked PBS’s new ombudsman to see whether the network’s underwriting rules are permitting underwriters to back programs that serve their interests. He cites the recent American Experience history of Las Vegas, underwritten by the city’s tourist authority and a foundation related to the Las Vegas Sun. [Current article.] WGBH told Current that most funding for the show came from usual series sources not related to Las Vegas and that none of the funders saw the program before underwriting the episode.