I doubt any US court would extradite a US citizen from US territory that hasn't broken US law for breaking a European law while not in Europe. the US does seem

I doubt any US court would extradite a US citizen from US territory that hasn't broken US law for breaking a European law while not in Europe. the US does seem to like countries inflicting there laws outside their own borders on US citizens unless it themselves and/or you pissed of the MPAA/RIAA first in which case you can expect the FBI to bust down you door with flimsy evidence and suspect warrant no matter the local laws anywhere in the the world (otherwise known as giving the Kim Dotcom treatment).