Erwin Chemerinsky quoted by Think Progress, June 13, 2017
“Mandamus of this sort is truly extraordinary and rarely granted,” Erwin Chemerinsky, a constitutional law expert and soon-to-be dean of Berkeley Law, told ThinkProgress via email. “The strong presumption in federal courts, reaffirmed by the Supreme Court as recently as yesterday, is that appellate courts don’t get involved until the trial court proceedings are completed.”