Fed. R. Evid. 903

Subscribing Witness’s Testimony

A subscribing witness’s testimony is necessary to authenticate a writing only if required by the law of the jurisdiction that governs its validity.

( Pub. L. 93–595, § 1 , Jan. 2, 1975 , 88 Stat. 1945 ; Apr. 26, 2011 , eff. Dec. 1, 2011 .)