CHAPTER 11:24
MUTUAL ASSISTANCE IN CRIMINAL MATTERS ACT
PART III
REQUESTS BY COMMONWEALTH COUNTRIES TO TRINIDAD AND TOBAGO FOR ASSISTANCE
22. Acceptance or refusal of request, etc.
(2) Such a request shall be refused if, in the opinion of the Central Authority—
(e) the granting of the request would be contrary to the Constitution of Trinidad and Tobago or the sovereignty of Trinidad and Tobago, or would prejudice the security, international relations or any substantial interest related to national security, public interest or other essential public policy of Trinidad and Tobago ;
Conflict with existing fundamental legal principle of general application - consultations with the Court
Refusal of ICC request - protection of national security
EDIT.