State v. Vargas

In State v. Vargas, 127 Ariz. 59, 61, 618 P.2d 229, 231 (1980) the Arizona Supreme Court held that Rule 410 prohibited the state from introducing, either in its case-in-chief or for impeachment purposes, a letter the defendant had signed "during plea negotiations," that is, "during discussions concerning a possible plea of guilty." The court observed that "permitting the use of plea discussions for impeachment would have a strong chilling effect on plea negotiations." Vargas, 127 Ariz. at 61, 618 P.2d at 231.