For those taking a thick conception of the rule of law, the existence of the Internal Security Act ("ISA"), which provides for detention without trial for people regarded by the executive as a risk to national security, is widely regarded as a breach of the rule of law doctrine, which has been the topic of considerable disagreement and debate in Singapore, largely through differing conceptions of the doctrine.
Chapter II of Part II of the ISA, which allows for preventive detention (also known as detention without trial), is the most conspicuous feature of the Act. 
