Keep him please.
(1) 18 is very young, and it was a non violent crime. In this case I feel the overriding consideration should be reform, and statistically there is a good chance of him becoming a contributing member of society. Being in a place his mother or other family can visit may be an important part of that.
(2) Crypto has not imploded like tulips did only because it is the currency of crime, including ransomware. Any other valid use (apart from speculation) is vanishingly small, << 1% of all transactions. Despite which we see crypto becoming an integral part of Wall Street, and political lobbyists greasing the way.
(3) What kind of idiot keeps millions accessible via a phone SIM card - a well known vulnerability? Did the money come so easily that he just didn't care? Cf. a doddery pensioner being bilked out of their meager life savings through phone fraud. Not the same.
Please keep this young offender on your side of the Atlantic, I know the British justice system is capable of handling his punishment and reform.
I see no reason why US taxpayers should be on the hook for the several $100K a year to imprison and punish him in order to avenge that crypto fool.
Biting the hand that feeds IT
