The continuing problems of law enforcement testimony

Be it context, or something else such as human lie detector testimony, prosecutors often seek to go too far with law enforcement testimony.

Second Circuit highlights two important issues concerning law enforcement testimony: first, an officer may not provide lay testimony that is based upon “specialized training and experience”; and second, expert opinion testimony is not permitted on the defendant’s intent, in United States v. Haynes, _ F.3d _ (2d Cir. Sept. 5, 2013) (No. 12–626–cr)

h/t federal evidence review