However, he did not get along with Tadakuni MIZUNO, who was the head of roju, as he made objections to Agechi-rei (confiscation command of territory), Shonai tenpu (changing the territory to Shonai Domain) and Kenyaku-rei (laws regulating expenditures); on top of these, in an attempt to drive Tadakuni out of the government, he requested Nariaki TOKUGAWA, head of Mito Domain who was then back home, to go to Edo, and plotted to hinder Tadakuni's Tenpo Reforms by masterminding Nariaki.
しかし、老中首座の水野忠邦とソリが会わず、上知令、庄内藩転封、倹約令などにそのつど反対を標榜し、挙句、忠邦を幕閣を放逐せんとして策謀をめぐらし、水戸に帰国していた水戸藩主徳川斉昭に出府を要請し、斉昭を背後から操って忠邦の天保の改革を潰そうと画策した。