	After the May Coup of 1926, Matuszewski was one of the leading representatives of the right-wing among the followers of Marshal Józef Piłsudski. During 1926-28, he served as a Polish representative in Budapest. During 1929-31, he was director of the Ministry of Treasury and Minister of Treasury in the five following governments (from the cabinet of Kazimierz Świtalski until the second cabinet of Walery Sławek). Between 1932 and 1936, he was the leading publicist of "Gazeta Polska" ("Polish Gazette"), whose print run was 35,000 during that period. After Matuszewski's resignation from the newspaper's editing staff, the printing run fell by half. He was also the leading editor of "Polityka Narodów", a monthly that analyzed geopolitics, foreign policies of foreign powers, international situation and the place of Poland in the world. In 1937, Matuszewski was awarded the Golden "Wawrzyn Akademicki" (Academic Laurel) by the Polish Academy of Literature for his "services for the good of literature.".