Thailand

… Where a question arises as to whether any treaty constitutes a case under paragraph two or paragraph three, the Council of Ministers may request the Constitutional Court to render a decision thereon. … (Sec. 178)

The Constitutional Court has duties and powers as follows:
(1) to consider and adjudicate on the constitutionality of a law or bill;
(2) to consider and adjudicate on a question regarding duties and powers of the House of Representative, the Senate, the National Assembly, the Council of Ministers or Independent Organs;
(3) others duties and powers prescribed in the Constitution.
The submission of a petition and the conditions for submitting a petition, the consideration and adjudication, the rendering of a decision, and the operation of the Court, except as prescribed by the Constitution, shall be in accordance with the Organic Act on the Procedures of the Constitutional Court. ... (Sec. 210)

A person whose rights or liberties guaranteed by the Constitution are violated, has the right to submit a petition to the Constitutional Court for a decision on whether such act is contrary to or inconsistent with the Constitution, according to the rules, procedures and conditions prescribed by the Organic Act on Procedures of the Constitutional Court. (Sec. 213)