U.S Code last checked for updates: Jun 18, 2021
Rule 607.
Who May Impeach a Witness

Any party, including the party that called the witness, may attack the witness’s credibility.

(Pub. L. 93–595, § 1, Jan. 2, 1975, 88 Stat. 1934; Mar. 2, 1987, eff. Oct. 1, 1987; Apr. 26, 2011, eff. Dec. 1, 2011.)