The Sixth Amendment right to confront testimonial witnesses established in Crawford v. Washington (2004) 541 U.S. 36 does not extend to supervised release revocation or similar proceedings. The Ninth Circuit held that the defendant’s non-absolute due process right to confront witnesses during his supervised release proceedings was not violated because the defendant’s interest in confronting hearsay evidence was outweighed by the government’s good cause for failing to produce the witness at the hearing.