Which regulatory branch of the federal government has the greatest influence on policy for the mass media? pols210?

It is the Federal Communications Commission. The FCC was shaped by the Communications Act of 1934 to supplant the radio direction elements of the Federal Radio Commission. The FCC assumed control wire correspondence direction from the Interstate Commerce Commission. The FCC's commanded ward covers the 50 expresses, the District of Columbia, and the Territories of the United States.