1. Does the Equal Protection clause of the Fourteenth Amendment require courts to apply a Sixth Amendment constitutional exception to a no-impeachment rule for clear statements of juror bias which are not grounded in claims of racial bias?

If so, would a juror's clear statements that they intended to use a defendant's right to remain silent at trial as evidence of the defendant's guilt, despite a jury instruction explaining that such silence cannot be used as evidence of guilt, be the type of bias that would call for a constitutional exception, as the bias would circumvent the requirement that the government prove a defendant guilty beyond a reasonable doubt?

And, does a failure to provide a defendant with an unbiased jury panel deprive a court of jurisdiction to enter a criminal judgment?

Does the Equal Protection clause of the Fourteenth Amendment require courts to apply a Sixth Amendment constitutional exception to a no-impeachment rule for clear statements of juror bias which are not grounded in claims of racial bias?