104 (1978) (law enforcement electrical power encompasses preservation of historic landmarks land-use restrictions might be enacted to greatly enhance the high quality of existence by preserving the character and aesthetic features of metropolis) City of New Orleans v. Dukes, 427 U.S. 104 (1978) Agins v. City of Tiburon, 447 U.S. 59, 83-84 (1978). See also Usery v. Turner Elkhorn Mining Co., 428 U.S. How Much Porn is Accessible Online?