The Speech or Debate Clause of the U.S. Constitution and the associated privilege

Cameron v. Otto Bock Orthopedic Industry, Inc., 43 F.3d 14, 17 (1st Cir. 1994) (holding, in plaintiff prosthetist customer's action for negligence and breach of warranty, that evidence of "Dear Customer" letters [which provided precise....Although subsequent remedial measures may not be used to prove negligence, culpable conduct, a defect in the product or its design, or a need for warning or instruction, subsequent remedial measures are admissible to show the feasibility of precautionary measures.

Giles v. California, 128 S. Ct. 2678, 2691 (2008) ("Although the case law is sparse, in light of these decisions and the absence of even a single case declining to admit unconfronted statements of an absent witness on wrongful-procurement grounds when the defendant sought to prevent the witness from...A criminal defendant forfeits his or her constitutional right of confrontation as a result of an action that prevents a witness from testifying only if the defendant's action was done for the purpose of preventing the witness from testifying.

Maggard Truck Line, Inc. v. Deaton, Inc., 573 F. Supp. 1388, 1392 (N.D. Ga. 1983) (holding, in plaintiff transportation broker's action against defendant carrier for negligence and destruction of goods, that evidence of insurance was....The rule barring the use of liability insurance or its absence on the issue of negligence or wrongful conduct does not bar such evidence about liability insurance if such evidence is offered on an issue other than negligence or wrongful conduct.