Actress has penned a letter to Obama, in a bid to stop the investigation into the hacking scandal
Assange, 45, has been in the embassy since 2012 to avoid being sent to Sweden where he faces the rape allegations, which he denies
Assange had sought temporary suspension of arrest to attend the funeral of fellow journalist Gavin MacFayden in London
He has been claiming asylum at London's Ecuadorean embassy since 2012 to avoid extradition over sex assault allegations
WikiLeaks founder Julian Assange is accused in a rape case
The hearing comes a day after WikiLeaks released medical records claiming Assange's mental health was at risk if he remained in the embassy
Assange fears that if he were sent to Sweden to face trial, he could be extradited to the US
Assange has compared living inside the embassy to a life on a space station