Qualification, or competence, of a person to serve as witness; evidence about the credibility of witnesses and hearsay declarants: impeachment and rehabilitation

Fed. R. Evid. 803(16) ("Statements in a document in existence twenty years or more the authenticity of which is established.").Federal Rule of Evidence 803(16) and comparable State rules create a hearsay exception for statements in an authenticated document that is more than a certain number of years old, typically twenty years.

Central Soya Co. v. Epstein Fisheries, Inc., 676 F.2d 939, 944-945 (7th Cir. 1982) (holding, in plaintiff seller's diversity action against defendant guarantor, that evidence of accountant's testimony about the negotiations [which led to the....Although settlement negotiations and offers are inadmissible (i) to show the validity or invalidity of a claim when validity is in dispute, (ii) to show the amount of damages when the amount is in dispute, or (iii) to impeach by showing a prior inconsistent statement or specific contradiction, they are admissible when they are offered to support or oppose a claim based on a settlement agreement.

Olden v. Kentucky, 488 U.S. 227, 232 (1988) (reversing conviction for forcible sodomy and remanding for further proceedings because the Kentucky Court of Appeals "failed to accord proper weight to [accused's] Sixth Amendment right 'to be confronted with the witnesses against him.'").The sexual history or predisposition of the alleged victim is admissible if its exclusion would violate a criminal defendant's constitutional rights.