Webb v. Texas

When Webb (defendant) called a witness who was already serving prison time on other convictions, the trial judge delivered a lengthy, singular warning about the consequences of perjury and its effect on parole, unlike anything given to any state witness, and the witness then refused to testify; Webb was convicted, and the state appellate court affirmed on the grounds Webb had not objected during the warning and had not proven the warning caused the refusal.

Whether a criminal defendant is deprived of due process when the trial judge directs remarks at a particular defense witness that intimidate the witness into refusing to testify.