Is there any mechanism to force a judge to recuse him/herself from a case? (I mean above and beyond filing a motion and leaving the decision to the judge him/herself to decide?)
For example, Justice Ginsberg recently commented on the U.S. presidential election by taking a favorable position for one leading candidate and against another. If a case were to come before the Supreme Court (à la Bush v. Gore) with the potential to determine the outcome of the election, is there a mechanism by which Chief Justice Roberts (or any subset of the justice panel or any other body, like congress) could force Justice Ginsburg to recuse herself from the case? Or could she unilaterally make the decision to stay on as a potential swing vote?
Even if there is no legal mechanism for an ex parte recusal, I'm curious what the legal ethics of this situation are also.