Under federal law, witness intimidation includes threatening and corruptly persuading to influence testimony, delay proceedings, or prevent a witness from testifying. Here, the witnesses’ mother threatened to prosecute her daughter for perjury in the event that she testified against her father on charges of child sexual abuse, and further told her that God would not like it if she testified. This was held to constitute a violation of 18 U.S.C. § 1512, and appellant’s conviction was affirmed.