The group of activists face charges under Sections 1036 and 1362 of Title 18. Section 1036 involves entering Federal buildings under false pretenses, but the more serious charge is what is under Section 1036, which is probably why they claim to have only been in the office to unplug the telephone systems to disrupt the U.S. Senator's office, things just don't add up. Section 1036 reads as the following:
Whoever willfully or maliciously injures or destroys any of the works, property, or material of any radio, telegraph, telephone or cable, line, station, or system, or other means of communication, operated or controlled by the United States, or used or intended to be used for military or civil defense functions of the United States, whether constructed or in process of construction, or willfully or maliciously interferes in any way with the working or use of any such line, or system, or willfully or maliciously obstructs, hinders, or delays the transmission of any communication over any such line, or system, or attempts or conspires to do such an act, shall be fined under this title or imprisoned not more than ten years, or both.Even though they claim to have only been in the building to disrupt communications, not wiretap, it would appear that they would still fall under the section where one would maliciously interfere "in any way with the working or use of any such line," which is what they claim they planned on doing (maybe they think this would get them a slap on the wrist).
To make matters worse, O'Keefe seems to have violated a court ordered gag order, tweeting "Govt official concedes no attempt to wiretap," which sounds fine and dandy, but according to an ABC report, "a federal law enforcement official said one of the suspects was picked up in a car a couple of blocks away with a listening device that could pick up transmissions. The official spoke on condition of anonymity because the information was not part of the FBI affidavit." Maybe O'Keefe should shut up instead of trying to continue to control his manufactured story that has left his hands.