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
Extradition law in the United States the federal hierarchy. For instance, in the United States, most criminal prosecutions occur at the state level, and most foreign relations occur at the federal level. In fact, under the United States Constitution, foreign countries may not have official treaty relations with sub-national units such as individual states; rather, they may have treaty relations only with the federal government. As a result, a state that wishes to prosecute an individual located in a foreign country must direct its extradition request through the federal government, which will negotiate the extradition with the foreign country. However, due to the constraints of federalism,