The supreme court was non partisan. Do you expect the truth arbitration department to go any better?

...no? the Supreme Court has always been a politically partisan entity. it quite literally has its most basic power (judicial review) because it usurped that power for itself as part of the political dispute at the heart of Marbury v. Madison. there is fairly compelling evidence that Chief Justice Marshall was seeking a means to enshrine judicial review into law irrespective of its constitutional validity and was not really deciding the case on merits. if the body was ever "non-partisan" then the word is meaningless.