Response or Comment
Trial by jury demands impartial jurors as the indispensable basis for public confidence. And the first requisite for obtaining impartiality is indifference on the part of those who select the jury. This was fully recognized at the common law, and ever since the days when jurors ceased to be witnesses and became triers of facts, it was a good objection to the entire panel that the sheriff was not indifferent between the parties in the selection and summoning of the jury. Prejudice on the part of individual jurors could be met by challenges to the polls, but when favor lurked behind the juror in the officer who selected and summoned him, insidiously cutting at the very root of the jury as an impartial tribunal, the whole panel was infected with a fatal infirmity.
Sunderland, Edson R. "Challenges to the Array." Mich. L. Rev. 21 (1923): 578-81.