In India after independence in the year of 1991 general census was conducted. In said census in all villages, towns and cities housings of the individuals (in any forms) were assigned with particular serial numbers along with names of the person staying there in. On the basis of these and many other details collected in form of data of 1951 census for the first time the National Register of Citizen (NRC) was published. This register denotes and displays the nationality of Indian citizens. Since 1951 National Register of Citizen has not been updated. Now question arises whether the new registration of the citizenship can be made on the basis of dada of census of 1951. At that time considerable portion of the Indian population were unaware about their rights and duties. With the advancement of the time the issues such as need to maintain cultural identity of the state, formulation of the refugee policies on the basis of national interest, problem of terrorism and political instability in the neighbouring countries of India came into existence. Therefore it may not be appropriate to use the data recorded in 1951 as mentioned above for the registration of citizenship, warranting the necessity of the updation of the National Register of Citizens which has already commenced in state of Assam. In this background it is necessary to analyze policy of the verification of the citizenship of the peoples in state of Assam for the sake of updation of National Register of Citizens for Assam, the provisions of the Indian Citizenship Act 1955, Citizenship (Registration of Citizens and issue of National Identity Cards) Rules 2003 etc. inclusive of the justifiability of the Amendment Act of 2020 in the light of the Article 14, 15, 19 & 21 of the Constitution.