If it wasn't for crooks like him and those assholes who support him and condone his criminal activity then none of us would need security systems at all.
There will always be criminals regardless of whether others defend their actions.
Even if the elimination of the "common criminal" was possible, do you seriously believe nations would not need high security systems?
If the British legal system can't or wont deal with it then he should be extradited.
The British legal system can deal with it but it seems unlikely that the US system would deal with it in a proportionate manner taking all factors into consideration. I believe a number of your comments highlight my fears with regards to the likely US "justice".