"It is illegal for women to go topless in most cities, yet you can buy a magazine of a woman without her top on at any 7-11 store. So you can sell breasts, but you cannot wear breasts, in America." ~ Violet Rose
Protip: This is a really bad question to ask when visiting the National Mall. We have 8 buildings surrounding the Mall, and a total of 19 museums, 9 research centers and the National Zoo. A S.H.I.E.L.D agent should know better!