United States Supreme Court, Hardy v. Cross — Per Curiam
“ We have never held that the prosecution must have issued a subpoena if it wishes to prove that a witness who goes into hiding is unavailable for Confrontation Clause purposes, and the issuance of a subpoena may do little good if a sexual assault witness is so fearful of an assailant that she is willing to risk his acquittal by failing to testify at trial. ”
