Does implied bias need to be considered as an implied bias?

11 The district court did not indicate that its finding of implied bias was mandatory. We do note, however, that, in support of its finding, the court cited several cases from other circuits where courts held that it was reversible error not to presume that jurors who had particular employment relationships or prior experiences were biased. See, e.g., United States v. Allsup, 566 F.2d 68 (9th Cir.1977) (presuming bias on the part of two bank tellers at different branches of the bank that the defendant was accused of robbing). But we have specifically rejected that position. See Brown, 644 F.2d at 105 (declining to follow Allsup 's holding).