L Whether the presumption of prejudice established in Mattox and Remmer continues to apply to cases involving juror exposure to extraneous information and outside influence when such exposure and influence is not discovered until postconviction proceedings, and what burdens and standards of proof apply in such situations?

I. Whether the federal doctrine of implied juror bias is the supreme law of the land and determined by an objective legal standard that does not depend on the juror's own assessment of his or her impartiality?

Whether the presumption of prejudice established in Mattox and Remmer continues to apply to cases involving juror exposure to extraneous information and outside influence when such exposure and influence is not discovered until postconviction proceedings, and what burdens and standards of proof apply in such situations?