Permissible forms of witness rehabilitation after impeachment of witness by attack on the truthfulness (veracity, sincerity) of the witness

Ingalls Shipbuilding Corp. v. Trehern, 155 F.2d 202, 203-204 (5th Cir. 1946) (holding, in plaintiff employee's personal injury action against defendant employer for failure to maintin a safe workplace, that witness's testimony about....Although Federal Rule of Evidence 411 bars the use of liability insurance or its absence on the issue of negligence or wrongful conduct, evidence about the existence or non-existence of liability insurance my be used to impeach a witness by showing the witness's bias or prejudice.

United States v. Romero-Cruz, 201 F.3d 374, 377 (5th Cir. 2000) (on appeal court rejected criminal defendant's thesis that the government's deportation of the alien witnesses without permitting interviews violated his....The exclusion of exculpatory evidence in a criminal trial does not violate the constitutional right to present a defense and is not constitutionally arbitrary or disproportionate if the excluded evidence either is immaterial or has very little or no probative value.

United States v. Saget, 377 F.3d 223, 229-230 (2d Cir. 2004) (upholding trial court's admission of co-conspirator's statements to a confidential informant which did not violated defendant's Confrontation Clause rights....If a statement is offered against a criminal defendant as the statement of the defendant's co-conspirator which was made during and in furtherance, the statement is not a "testimonial" statement for purposes of the right of confrontation guaranteed by the Sixth Amendment of the United States Constitution and the statement is therefore not subject to the constraints on admissibility imposed by that confrontation right on "testimonial" hearsay statements.