All persons entering in or on Federal property are prohibited from loitering, exhibiting disorderly conduct or exhibiting other conduct on property that—
(a)
Creates loud or unusual noise or a nuisance;
(b)
Unreasonably obstructs the usual use of entrances, foyers, lobbies, corridors, offices, elevators, stairways, or parking lots;
(c)
Otherwise impedes or disrupts the performance of official duties by Government employees; or
(d)
Prevents the general public from obtaining the administrative services provided on the property in a timely manner.