 Following the war, Riezler became a staunch supporter of the Weimar Republic.He joined the German Democratic Party, contributed regularly to the pro-Weimar newspaper "Die Deutsche Nation," and served as the Foreign Office's representative during the drafting of the Weimar Constitution.From November 1919 until April 1920 he was chief of cabinet to President Friedrich Ebert and played a central role in suppressing the Bavarian Soviet Republic and the Kapp Putsch.