Russian tycoon Oleg Deripaska is suing the United States, alleging that it had overstepped its legal bounds in sanctioning his companies.
Mr Deripaska had to reduce his ownership of Rusal, the parent company of Aughinish Alumina in County Limerick, as part of a deal to lift sanctions on the company.
The Russian says the sanctions on his companies have made him the "latest victim" in the ongoing US probe into Moscow's alleged political interference.
In a legal filing, he asked the US District Court in Washington to block the US Treasury Department from using the "devastating power" of such economic sanctions that he said were inconsistent with US Constitution.
In January, the Treasury Department removed restrictions on Rusal, EN+ Group and EuroSibEnergo JSC. As part of the deal, Rusal agreed to reduce the ownership stake held by the oligarch.
The move was welcomed by the Irish Government who had argued that the sanctions would adversely the Aughinish plant, the largest alumina plant in Europe.
Aughinish Alumina employs 460 staff, 200 contractors and indirectly supports hundreds of additional jobs.