Parliamentary system
In Tun Razak's cabinet, the two most powerful men other than him were Ismail Abdul Rahman and Ghazali Shafie, who had declared the Westminster-style Parliamentary system inappropriate for Malaysia. Tun Razak also readmitted to the party "ultras" who had been expelled, like Mahathir and Musa Hitam. Mahathir gained notoriety after his expulsion from UMNO by authoring "The Malay Dilemma", a book promptly banned from Malaysia, which posited that the Malays are the definitive people of Malaysia, and thus deserved special rights as the sovereign people of the nation. It also controversially argued that the Malays needed affirmative action to overcome deficiencies in their genetic stock.