Assange v Swedish Prosecution Authority British to review the case, the Working Group on Arbitrary Detention formally declined to do so in late November, saying that there was not enough new information provided to warrant such a review. Assange and his supporters have expressed concerns that upon his return to Sweden, Assange may be extradited to the United States to face charges related to his professional work, since Wikileaks has been under investigation in the US since at least 2010. On 13 January 2017, Wikileaks announced that Assange would agree to extradition to the United States if the Obama administration granted clemency to Chelsea Manning
UK–US extradition treaty of 2003 about the level of proof required being less to extradite from the UK to the US rather than vice versa. Among other provisions Part 2 of the Act: Extradition to category 2 territories (non-European Arrest warrant territories) removed the requirement on the USA to provide "prima facie" evidence in extraditions from the UK, requiring instead only "reasonable suspicion". This was necessary to redress the previous imbalance against the USA under the 1870 Act, as the UK did not have to provide the more onerous "prima facie" evidence to extradite from the USA. The requirement for the UK is to show