Marquez-Urquidi v. United States

How later courts describe this case

• holding that weight of evidence is exclusively for finder of fact who is free to believe all, part, or none of evidence and to determine credibility of witnesses
• noting that Smith does not bind Pennsylvania courts and declining to extend use immunity to a defense witness where appellant failed to demonstrate that such testimony was clearly exculpatory
• explaining that weight of evidence is exclusively for finder of fact; appellate court cannot substitute its judgment for that of fact-finder
• stating where trial court has ruled on weight claim, appellate court’s review is limited to whether trial court palpably abused its discretion in ruling on weight claim
• stating: where trial court has ruled on weight claim, appellate court’s role is limited to whether trial court palpably abused its discretion in ruling on weight claim
• explaining weight of evidence is exclusively for finder of fact who is free to believe all, part, or none of evidence and to determine the credibility of witnesses; appellate court cannot substitute its judgment for that of finder of fact