Supreme Court rules ratification of EU-Canada trade deal unconstitutional

The court also ruled 6-1 that amending the Arbitration Act 2010 could allow the Ceta trade deal to be ratified without a referendum following a challenge by government TD Patrick Costello

Patrick Costello’s success in the Supreme Court today is significant for both legal and political reasons. Picture: Fergal Phillips

A Green Party TD has won his case challenging the constitutionality of a trade deal between the European Union and Canada.

Government TD Patrick Costello took the case against the state in 2021 due to his concerns over the constitutionality of investor courts provided for under the EU-Canada Comprehensive Economic and Trade Agreement (Ceta). He lost his High Court case last year but appealed it to the Supreme Court.

Ruling by a majority of 4-3, ...