U.S. Supreme Court justice Ruth Bader Ginsburg

Nearly 60 Republican members of Congress are demanding that U.S. Supreme Court Justice Ruth Bader Ginsburg recuse herself from the upcoming travel ban case because of the negative public comments she made about Donald Trump before he was elected president.

As an associate justice of the Supreme Court, you are required to recuse yourself in cases in which your 'impartiality might reasonably be questioned' and where you have 'a personal bias or prejudice concerning a party,' the 58 signers asserted in a letter sent to Ginsburg on Monday, citing excerpts from the federal recusal statute, 28 U.S.C. 455.

The letter added, There is no doubt that your impartiality can be reasonably questioned; indeed, it would be unreasonable not to question your impartiality. Failure to recuse yourself from any such case would violate the law and undermine the credibility of the Supreme Court of the United States. Ginsburg has not yet commented on or responded to the letter.

The call for recusal was triggered by the high court's announcement on Monday that it would hear arguments in October in Trump v. International Refugee Assistance Project, the dispute over Trump's executive order temporarily barring entry to the United States for certain foreign nationals.

The House letter references several statements made by Ginsburg in a series of press interviews last July, including one with The New York Times: I can't imagine what the country would be with Donald Trump as president. She also called Trump a faker in a CNN interview, and told the Associated Press she did not want to think about the possibility of Trump becoming president, but if it should be, then everything is up for grabs.

After a storm of criticism from across the political spectrum Ginsburg said in a statement that her comments were ill-advised and I regret making them. Judges should avoid commenting on a candidate for public office.

When asked about the House letter Tuesday, judicial ethics experts while agreeing that Ginsburg's comments were a mistake expressed doubt that Ginsburg will or must recuse.

The letter from the House members is politically opportunistic, said Hofstra University Maurice A. Deane School of Law professor James Sample. Still, Justice Ginsburg has only herself to blame for the optics.

One problem with the recusal request is that it was made by nonparties to the case. Though no rule prevents nonparties from urging recusal, it may not go over well with the justices, though Ginsburg alone decides whether or not to recuse. The court is understandably loath to permit the disqualification process to be hijacked as a tool for interest groups to target disfavored judges, said Charles Geyh, professor at Indiana University Maurer School of Law Bloomington.

However the request was made, Sample said, recusal is not required. Recusing in every case involving the Trump administration is institutionally impracticable, he said. While the travel ban is a signature Trump initiative, Justice Ginsburg's comments about Trump as an individual did not specifically address the travel ban, which, of course did not yet exist at the time.

Sample added, Were a case to come before the court that more directly involved President Trump as an individual party, the arguments for Justice Ginsburg's recusal would be stronger than they are here.

The Ginsburg recusal request resonates, in some respects, with the 2004 controversy over the late Justice Antonin Scalia's refusal to recuse himself in Cheney v. United States District Court, a case before the high court involving the transparency of an energy advisory committee led by then-vice president Dick Cheney. Cheney, like Trump in the current case, was a named party.

The Sierra Club, a party to the case, filed a motion to recuse Scalia because of his relationship with Cheney, including the fact that they had recently gone on a duck-hunting vacation together. The motion stressed that because Cheney's own conduct in the case was at issue, the Scalia-Cheney friendship required recusal.

Bus Scalia, in an unusual public memorandum, responded that he would not recuse, stating that while friendship is a ground for recusal of a justice where the personal fortune or the personal freedom of the friend is at issue, it has traditionally not been a ground for recusal where official action is at issue, no matter how important the official action was to the ambitions or the reputation of the government officer.

If she responds to the House letter, Ginsburg could cite Scalia's words in refusing to recuse, even though her relationship with the named party is one of enmity rather than friendship.

Contact Tony Mauro at tmauro@alm.com. On Twitter: @Tonymauro