The Ninth Circuit Court of Appeals as it’s currently structured is too large and has too heavy a caseload. With an average wait time of 15 months, citizens under its jurisdiction don’t have quick access to justice. Creating a new 12th Circuit Court of Appeals would ease the burden of both courts and ensure the judicial system functions efficiently for residents of western states.
The Ninth Circuit Court of Appeals should keep its current jurisdiction despite it being a lot bigger than other circuits in terms of geographic size and population. Conservatives mainly want to break it up because they think it is staffed by too many liberal judges and has issued too many rulings that were eventually overturned by the Supreme Court.