40 U.S.C. § 6303 — Unlawful activities

(a) In the specified buildings and grounds^*, anyone other than an authorized employee or concessionaire may not: (1) offer or display an article for sale; (2) display a sign, placard, or other advertisement; or (3) ask for alms, subscriptions, or contributions. (b) No one may: (1) unless an authorized employee, touch or handle an art object or a scientific or historical object on exhibition; or (2) step or climb on, remove, or injure an art object, exhibit (including an exhibit animal), equipment, seat, wall, fountain, other structure or architectural feature, tree, shrub, plant, or turf in those buildings or grounds.