Law.com has Trump Considers Unprecedented Move: Going to Supreme Court Arguments -- "Since the Supreme Court was established more than 230 years ago ... no president has taken time away from their White House duties to sit for a regular argument session of the court."
There is no precedent for a sitting president attending arguments at the U.S. Supreme Court, in his or any other case, according to the Supreme Court Historical Society. Some have criticized the plan as an affront to judicial independence.US Senate Confirms Trump's Fourth Appellate Court Judge Pick of Second Term -- The U.S. Senate voted 52-46 along party lines to confirm Rebecca Taibleson as a judge on the US. Court of Appeals for the Seventh Circuit. Taibleson is a former Kirkland & Ellis associate and law clerk to two U.S. Supreme Court justices.