Deripaska is suing Treasury Secretary Steven Mnuchin in his official capacity, the US Treasury Department, OFAC and OFAC Director Andrea Gacki in her official capacity. Deripaska accused of the US of acting with “lawlessness” by relying on “false rumour and innuendo” and “decades old defamatory attacks” made by business competitors to sanction him. Aluminium company Rusal and its parent company En+ were hit with the US sanctions in April 2018 when the US blacklisted him along with several other influential Russians because of their ties to Russian President Putin. Deripaska agreed in late 2018 to reduce his stake in En+ to 44.95% in a deal that allowed the measures against Rusal and En+ to be lifted.
