"Like National Security Agency whistleblower Edward Snowden, Assange is no friend to the federal government. The Wikileaks founder has been holed up in the Ecuadorian embassy in London, evading extradition to Sweden where he is wanted on rape allegations. Wikileaks fears that the US will take Assange if he is extradited to Sweden. Its spokesman Kristinn Hrafnsoon said they would only believe US if it issues an official confirmation that it won’t prosecute Wikileaks."
Is WikiLeaks Reliable? 5 Fast Facts You Need to Know | Heavy.com
Maybe he is hoping for a friendly American government.