18 U.S.C. § 3502 : US Code - Section 3502: Admissibility in evidence of eye witness testimony

Search 18 U.S.C. § 3502 : US Code - Section 3502: Admissibility in evidence of eye witness testimony

The testimony of a witness that he saw the accused commit or
participate in the commission of the crime for which the accused is
being tried shall be admissible in evidence in a criminal
prosecution in any trial court ordained and established under
article III of the Constitution of the United States.