The High Court is to refer the case of Sean Garland to the Director of Public Prosecutions to consider whether the 76-year-old is to be prosecuted in Ireland.
On Wednesday, the court refused to extradite Mr Garland to the US to face charges in connection with a counterfeiting operation.
US authorities allege that the former Workers' Party president was involved in the production of high-quality counterfeit US dollars, carried out in collusion with the government of North Korea.
Mr Justice John Edwards decided that the offence for which the US wanted to extradite Mr Garland is regarded as having been committed in Ireland and therefore the court is prohibited from extraditing the 76-year-old.
Mr Justice Edwards published his findings today.