George Shiras, Jr.,
Andrews v. United States (162 U.S. 420…
(1896)
“ United States Error is attributed to the court below in permitting the witness Flint to testify in the case, for the reason that he was an officer of the United States, and that correspondence was carried on, through the mails, for the sole purpose of obtaining evidence from the defendant upon which to base the prosecution. A similar contention was disposed of by this court in the case of Grimm v. U.S., 156 U.S. 604, 15 Sup. Ct. ”
