sed the broad discretion vested in [it] by the rulings of the Supreme Court of the United Stati in [its] impaneling of [the] jury.' United States Phibbs, 999 F.2d 11, 1071 (6th Cir.1993) (quoting United States Blanton, 719 F.2d 815, 822 (6th Cir.1983)), remaining mindful of the fact that a distr