Champion v. Ames (1903) 188 U.S. 321

"As a state may, for the purpose of guarding the morals of its own people, forbid all sales of lottery tickets within its limits, so Congress, for the purpose of guarding the people of the United States against the "widespread pestilence of lotteries" and to protect the commerce which concerns all the states, may prohibit the carrying of lottery tickets from one state to another."

Stambovsky v. Ackley (1991) 572 N.Y.S. 672

"From the perspective of a person in the position of plaintiff herein, a very practical problem arises with respect to the discovery of a paranormal phenomenon: "Who you gonna' call?" as a title song to the movie "Ghostbusters" asks. Applying the strict rule of caveat emptor to a contract involving a house possessed by poltergeists conjures up visions of a psychic or medium routinely accompanying the structrual engineer and Terminix man on an inspection of every home subject to a contract of sale. It portends that the prudent attorney will establish an escrow account lest the subject of the transaction come back to haunt him and his client--to pray that his malpractice insurance coverage extends to supernatural disasters. In the interest of avoiding such untenable consequences, the notion that a haunting is a condition which can and should be ascertained upon reasonable inspection of the premises is a hobgoblin which should be exorcised from the body of legal precedent and laid quietly to rest."

"Smith, J., dissenting.
...[I]f the doctrine of caveat emptor is to be discarded, it should be for a reason more substantive than a poltergeist. The existence of a poltergeist is no more binding upon the defendants than it is upon this court."