 Also in 1961, the U.S. Congress passed the Sports Broadcasting Act in response to a court decision which ruled that the NFL's method of negotiating television broadcasting rights violated antitrust laws.The law allows the league to sell the rights to all regular season and postseason games to the networks, but prohibits the league from directly competing with high school and college football games.Since high school and college teams typically play games on Friday and Saturday, respectively, the NFL cannot hold games on those days until those seasons generally end in mid-December.