In '''''Kyles v. Whitley''''', 514 U.S. 419, 437 (1995), the [[U.S. Supreme Court]] held that a prosecutor has a constitutional obligation to learn of, to preserve, and to communicate with the defense any exculpatory and impeachment evidence in the government's possession. | In '''''Kyles v. Whitley''''', 514 U.S. 419, 437 (1995), the [[U.S. Supreme Court]] held that a prosecutor has a constitutional obligation to learn of, to preserve, and to communicate with the defense any exculpatory and impeachment evidence in the government's possession. |