Okada's cabinet issued Kokutai Meicho Seimei (Declaration of Clear Evidence of the National Polity) to avoid attacks from right-wing groups and the military, and banned Minobe's writings.
また、岡田内閣も右翼・軍部の攻撃を恐れ、国体明徴声明を出し、また美濃部の著書を発禁処分とした。