If there is an extradition treaty, & that country’s government chooses its in their interest to honor it, or they’re defeated in a conflict and we are the “deciding” power. A lot of if’s !
Any way I am talking about the espionage laws.
Try asking for the extradition of the head of Russia’s FSB, China’s external intelligence service even an “ally” like France, the DGSE spies on us. They task their agents to go after US government & private secrets. These foreign origin “taskings” if acted upon break our laws. Assange would be in that role “director of a service”; I doubt if there is a paper trail. The stronger case is probably illegally receiving US property. Even then I doubt if the Bolivians would care to be helpful.