The chair of the Federal Communications Commission is proposing to do away with media ownership rules that bar companies from owning both a newspaper and a television or radio station in the same city. Kevin Martin says he will allow one month of public comment before the FCC puts the plan to a vote. Martin has backed a series of studies on the rules criticized for an alleged bias toward media consolidation. Gene Kimmelman, vice president of the nonprofit Consumers Union, said: “We will demonstrate that this is purely an ideological, politically motivated effort to allow media companies to consolidate and dominate local markets.”