It has long been an established rule of courtroom procedure that a party calling a witness is prohibited from testing the credibility of that witness except under certain conditions, and then only in certain ways. The basic premise that one may not impeach one's own witness has, to a greater or lesser extent, been modified by courts and legislatures over the years, but for the most part the decision-making process has remained impervious to the impressive array of judicial theorists who have roundly criticized the rule for not meeting the exigencies of modern practice. In State v. Fronning, the Supreme Court of Nebraska overturned almost eighty years of precedent and abrogated virtually every restriction on the impeachment of one's own witness in Nebraska courts.
Jeffrey W. Meyers,
Evidence—Impeaching One’s Own Witness in Nebraska: State v. Fronning, 186 Neb. 463, 183 N.W.2d 920 (1971),
51 Neb. L. Rev. 352
Available at: https://digitalcommons.unl.edu/nlr/vol51/iss2/8