The President could actually have a little fun with them first, say an Executive Order:
In order to maintain the safety of our Jurist’s, ALL members of the Federal Judiciary SHALL be prohibited form having anyone in their employ or employed on their behalf to be in possession of ANY firearm, Weapon, or Ammunition.
FOR THEIR SAFETY!
Order the GAO to immediately begin auditing the 9th Circuit court to make sure that they’re spending money legally. They are all employees of the people of this country.