Although not noted as a public speaker (he spoke rarely and briefly), Sieyès held major political influence, and he recommended the decision of the Estates to reunite its chamber as the National Assembly, although he opposed the abolition of tithes and the confiscation of Church lands. His opposition to the abolition of tithes discredited him in the National Assembly, and he was never able to regain his authority. Elected to the special committee on the constitution, he opposed the right of ""absolute veto"" for the King of France, which Honoré Mirabeau unsuccessfully supported. He had considerable influence on the framing of the departmental system, but, after the spring of 1790, he was eclipsed by other politicians, and was elected only once to the post of fortnightly president of the Constituent Assembly.