((a)) Whoever—

((1)) knowingly enters or remains in any restricted building or grounds without lawful authority to do so;

((2)) knowingly, and with intent to impede or disrupt the orderly conduct of Government business or official functions, engages in disorderly or disruptive conduct in, or within such proximity to, any restricted building or grounds when, or so that, such conduct, in fact, impedes or disrupts the orderly conduct of Government business or official functions;

((3)) knowingly, and with the intent to impede or disrupt the orderly conduct of Government business or official functions, obstructs or impedes ingress or egress to or from any restricted building or grounds; or

((4)) knowingly engages in any act of physical violence against any person or property in any restricted building or grounds;

((5)) knowingly and willfully operates an unmanned aircraft system with the intent to knowingly and willfully direct or otherwise cause such unmanned aircraft system to enter or operate within or above a restricted building or grounds;

((b)) The punishment for a violation of subsection (a) is—

((1)) a fine under this title or imprisonment for not more than 10 years, or both, if—

((A)) the person, during and in relation to the offense, uses or carries a deadly or dangerous weapon or firearm; or

((B)) the offense results in significant bodily injury as defined by section 2118(e)(3); and

((2)) a fine under this title or imprisonment for not more than one year, or both, in any other case.

((c)) In this section—

((1)) the term “restricted buildings or grounds” means any posted, cordoned off, or otherwise restricted area—

((A)) of the White House or its grounds, or the Vice President’s official residence or its grounds;

((B)) of a building or grounds where the President or other person protected by the Secret Service is or will be temporarily visiting; or

((C)) of a building or grounds so restricted in conjunction with an event designated as a special event of national significance; and

((2)) the term “other person protected by the Secret Service” means any person whom the United States Secret Service is authorized to protect under or by Presidential memorandum, when such person has not declined such protection.