Federal Rules of Evidence Rule 902.

Evidence That Is Self-Authenticating

Rule 902. The following items of evidence are self-authenticating; they require no extrinsic evidence of authenticity in order to be admitted:

(4) Certified Copies of Public Records. A copy of an official record - or a copy of a document that was recorded or filed in a public office as authorized by law - if the copy is certified as correct by:
(a) the custodian or another person authorized to make the certification