question: A party 's consent to a treaty is invalid if it had been given by an agent or body without power to do so under what ?
answer: that state 's domestic law
turker_answer: A party 's consent to a treaty is invalid if it had been given by an agent or body without power to do so under that state 's domestic law .
rule-based: A party 's consent to a treaty is invalid if it had been given by an agent or body without power to do so under that state 's domestic law .