This case held that criminal defendants have no constitutional right to introduce expert testimonial evidence that may passed a polygraph examination.

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United States v. Scheffer (1998) is the case that held criminal defendants do not have a constitutional right to introduce expert testimony regarding polygraph examinations. The Supreme Court ruled that a military rule prohibiting the admission of polygraph evidence did not violate a defendant's Sixth Amendment rights.

This Case Held That Criminal Defendants Have No Constitutional Right