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We are witnessing growing calls by States, academics and NGOs for investment arbitral tribunals to recognize that they are engaged in a form of international judicial review and thus should adopt appropriate levels of deference when reviewing the legislative, executive and judicial acts of respondent States. Some draw on domestic public law comparisons, arguing that tribunals should adopt deferential standards of review when adjudicating upon governmental conduct. Others rely on international comparisons, invoking notions such as the margin of appreciation doctrine that some international courts adopt when reviewing State actions for conformity with international obligations. Whether and when investment treaty tribunals should adopt deferential standards of review represents the next battleground for those who conceptualize investment treaty arbitration as a form of global governance.
Roberts, Anthea. 2011. ‘The next battleground: standards of review in investment treaty arbitration’, International Council for Commercial Arbitration Congress Series, Vol 16:170-183.