National Courts as Actors in Investment Arbitration
AbstractNational courts are actors in investment arbitration since they influence the functioning of investment arbitration and are themselves in turn influenced by investment arbitration. The influence of national courts on investment arbitration is larger than the influence of other international courts and tribunals, since national law is part of the applicable law in investment arbitration and national courts are authorised to interpret and apply national law. National courts influence investment arbitration by competing for jurisdiction through the exhaustion of local remedies, umbrella clauses, and the fork-in-the-road rule. National courts facilitate investment arbitration by enforcing awards and at the same time disrupt it when rejecting enforcement or issuing anti-arbitration injunctions. Investment tribunals can restrain national courts by issuing anti-suit injunctions. Above all, they can review the decisions of national courts on grounds of denial of justice, fair and equitable treatment, the effective means test, and indirect expropriation. The the relationship between national courts and investment tribunals is such that the later have the last word, although the role of national courts as actors is certainly noteworthy.