I am reading this press release of the U.S. Attorney’s Office for the Northern District of California.
The attorney states that:
Mason Sheppard, aka “Chaewon,” 19, of Bognor Regis, in the United Kingdom, was charged in a criminal complaint in the Northern District of California with conspiracy to commit wire fraud, conspiracy to commit money laundering, and the intentional access of a protected computer.
So the defendant appears to be located in the UK and is being charged in the US. As far as I know, UK people are bound by laws approved by the UK Parliament, and US people are bound by laws approved by the US Congress.
How would the guy be held responsible under a law that the legislature of the country in which he resides did not approve?
What if he is convicted in a US court, the US sends a formal request to UK to have him sent in the US to go to US jail, and the UK government answers "That's nice. We will not send him over"? What would happen then? Would the US police fly to the UK and take him? Will the US nuke the UK?
What if the US asks for him to be punished in the UK, and the UK answers "Sure. We will fine him 1$"?