((a)) Whoever, either—

((1)) in the special maritime and territorial jurisdiction of the United States, or on any land or building owned by, leased to, or otherwise used by or under the control of the Government of the United States; or

((2)) in the Indian country as defined in ,

((b)) For the purposes of this section, the term “visual depiction” includes undeveloped film and videotape but does not include mere words.