According to the WashPo, St. Johnsbury, Vermont has decided to make the plunge and legalize soothsaying. It turns out that a number of jurisdictions still have anti-fortunetelling statutes on the books. Contemporary Pennsylvania law, for example states:
A person is guilty of a misdemeanor of the third degree if he pretends for gain or lucre, to tell fortunes or predict future events, by cards, tokens, the inspection of the head or hands of any person, or by the age of anyone, or by consulting the movements of the heavenly bodies, or in any other manner, or for gain or lucre, pretends to effect any purpose by spells, charms, necromancy, or incantation, or advises the taking or administering of what are commonly called love powders or potions, or prepares the same to be taken or administered, or publishes by card, circular, sign, newspaper or other means that he can predict future events, or for gain or lucre, pretends to enable anyone to get or to recover stolen property, or to tell where lost property is, or to stop bad luck, or to give good luck, or to put bad luck on a person or animal, or to stop or injure the business or health of a person or shorten his life, or to give success in business, enterprise, speculation, and games of chance, or to win the affection of a person, or to make one person marry another, or to induce a person to make or alter a will, or to tell where money or other property is hidden, or to tell where to dig for treasure, or to make a person to dispose of property in favor of another. (18 Pa.C.S.A. § 7104 )
The law apparently dates back to an 1861 state statute. A quick Westlaw search reveals reported cases dealing with anti-fortunetelling statues in California, Illinois, Maryland, New York, Washington, and other states.
Witchcraft and cursing, of course, were crimes at common law on the straight-forward theory that they were a method of harming others that ought to be suppressed. One may dispute the metaphysics behind this crime, but as a normative matter it seems simple enough. One might even object to love potions as a kind of officious intermeddling. The suppression of fortunetelling — along with other forms of beneficent magic like peering in stones to find lost treasure — however, rests on a more subtle calculation, some of it less than pretty.