De Gaulle remained intent on replacing the weak constitution of the Fourth Republic. He is sometimes described as the author of the new constitution, as he commissioned it and was responsible for its overall framework. The actual drafter of the text was Michel Debré who wrote up de Gaulle's political ideas and guided the text through the enactment process. On 1 June 1958, de Gaulle became Prime Minister and was given emergency powers for six months by the National Assembly, fulfilling his desire for parliamentary legitimacy.