Some lawyers and supporters of Ms Knox have argued that having been acquitted in 2011, she would be protected under the US Constitution from “double jeopardy” – being tried twice for the same charge.
Yet the US-Italy extradition treaty only protects Americans from extradition to face prosecution again in Italy for an offence that has already been dealt with by the US legal system. “This is not applicable in this situation,” said Professor Julian Ku, who teaches transnational law at Hofstra University.
For extradition candidates like Ms Knox who have already been convicted, the treaty states that Italy must merely produce “a brief statement of the facts of the case,” as well as the text of the laws governing the crime committed, the punishment it would receive, and its statute of limitations.
Her conviction would “easily satisfy the conditions of the treaty,” said Prof Ku. “So it would be hard for the US to explain why she should not be handed over”.
from What next for Amanda Knox? - Telegraph