The Constitutional Court Wednesday ruled that the amendment to Article 190 of the Constitution was unconstitutional.
The amendment bill was aimed at allowing the government to sign international deals without having to seek legislative approval on a negotiating framework.
It was to allow the government to bypass the legislature to negotiate any deals except those impacting territorial integrity, sovereignty, relevant laws enacted by Parliament and the opening up of free trade.
The court ruled that the amendment bill and the amendment method violated Article 68, which prohibited the unconstitutional way of acquiring state power.
The complaint against the Article 190 amendment bill was filed by former Democrat MP Wirat Kalayasiri.