Another aspect
Regardless of the merits (or otherwise) of the case and where the actual offence may have been committed, I have another misgiving about this whole thing.
Given the developments over the last days and weeks in the US, should we be extraditing people to a judicial system run by AG Jeff Sessions and his boss Donald Trump.? The US Supreme Court is blatantly political in appointments and judgements. Can we trust the well-being of a UK citizen to them. And if them, why not Russia or China?
Try him in the UK by our standards or not at all. Surely that is the message of Brexit; regain control and sovereignty.