 In the case of "Persatuan Aliran Kesedaran Negara v. Minister of Home Affairs", Harun quashed the decision of the Minister to refuse "Aliran", a reform group, permission to publish a Malay publication.His decision was reversed on appeal in the Supreme Court, where Supreme Court Justice Ajaib Singh ruled that the amended section 12 of the Act did exclude actions of the Home Affairs Minister from judicial review.The constitutionality of the Act has been called into question.