To cap all this, the amendment of articles touching on the "sensitive issues" mentioned, as well as the clause governing this rule on amendments, was forbidden without the consent of the Conference of Rulers. Effectively entrenching the "sensitive" Articles, this was heavily criticised by opposition MPs. It was claimed that if Parliament could be prevented from discussing particular issue, Parliamentary sovereignty was undermined. It was also unclear if the ban from speaking on "sensitive issues" applied to the ban itself. Nevertheless, the provisions were passed. The Internal Security Act (ISA), which effectively allows the government to detain anyone it deems a threat to national security for an indefinite period without judicial review, was also amended in 1971 to stress the "preservation of intercommunal harmony".