Yung v. State

In Yung v. State, 906 P.2d 1028 (Wyo. 1995), the defendant attempted to utilize "upon a sudden heat of passion" as an affirmative defense. 906 P.2d at 1035. In rejecting his affirmative defense argument, the Court said "upon a sudden heat of passion" is an element of the voluntary manslaughter offense rather than an affirmative defense. Id.