Federal Rule of Evidence 409 or a comparable State rule bars evidence that a party paid for or furnished medical, hospital, or similar expenses for an injury if such evidence is offered to show the party's liability for the injury.

Loughan v. Firestone Tire & Rubber Co., 749 F.2d 1519, 1523-1524 (11th Cir. 1985) (upholding trial court's admission of evidence of plaintiff's drinking on the job where such evidence demonstrated a uniform pattern of behavior ).The habit of a natural person is admissible to show the person's conduct on a particular occasion.

United States v. Solomon, 399 F.3d 1231, pin? (10th Cir. 2005) (on appeal court rejected criminal defendant's argument that the district court's exclusion of photographs denied him the right to present a defense; convictions affirmed; "Whether the exclusion of the photographs...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. No Neck, 472 F.3d 1048, 1054 (8th Cir. 2007) (conviction for aggravated sexual abuse, and abusive sexual contact; defendant challenged the district court's exclusion of evidence that complaining witness Lori had previously accused her brother of sexually abusing the children; conviction...Under some circumstances untruthfulness is admissible to impeach a witness.