Wisconsin Statutes Crimes (Ch. 938 to 951) § 948.05. Sexual exploitation of a child

(1) Whoever does any of the following with knowledge of the character and content of the sexually explicit conduct involving the child may be penalized under sub. (2p):

(1m) Whoever produces, performs in, profits from, promotes, imports into the state, reproduces, advertises, sells, distributes, or possesses with intent to sell or distribute, any recording of a child engaging in sexually explicit conduct may be penalized under sub. (2p) if the person knows the character and content of the sexually explicit conduct involving the child and if the person knows or reasonably should know that the child engaging in the sexually explicit conduct has not attained the age of 18 years.

(2) A person responsible for a child's welfare who knowingly permits, allows or encourages the child to engage in sexually explicit conduct for a purpose proscribed in sub. (1)(a) or (b) or (1m) may be penalized under sub. (2p).

(3) It is an affirmative defense to prosecution for violation of sub. (1)(a) or (b) or (2) if the defendant had reasonable cause to believe that the child had attained the age of 18 years. A defendant who raises this affirmative defense has the burden of proving this defense by a preponderance of the evidence.