Case Note & Summary
The writ petition was filed under Article 32 of the Constitution of India by Sarbananda Sonowal, a citizen of India and former President of the All Assam Students Union, seeking to declare certain provisions of the Illegal Migrants (Determination by Tribunals) Act, 1983 as unconstitutional. The petitioner argued that the IMDT Act was arbitrary and discriminatory, making it difficult for Indian citizens in Assam to challenge the presence of illegal migrants. The petition highlighted the failure of the IMDT Act to effectively detect and deport illegal migrants, particularly those who entered Assam after March 25, 1971, and pointed out the adverse demographic changes in the state due to illegal migration. The Assam Accord of 1985, which aimed to address these issues, was referenced, indicating that the government had committed to detecting and deporting illegal migrants. The Union of India and the State of Assam filed counter affidavits acknowledging the need for a uniform approach to illegal migration and the inadequacies of the IMDT Act. The court analyzed the constitutional validity of the IMDT Act, considering the implications of illegal migration on national security and the demographic composition of Assam. Ultimately, the court held that the IMDT Act was unconstitutional and that the Foreigners Act, 1946 should apply uniformly across India, including Assam, to effectively address the issue of illegal migration.
Headnote
A) Constitutional Law - Ultra Vires Legislation - IMDT Act declared unconstitutional - Illegal Migrants (Determination by Tribunals) Act, 1983 - The court held that the IMDT Act was arbitrary and discriminatory, failing to effectively address illegal migration, thus violating the Constitution. The application of the Foreigners Act, 1946 was deemed necessary for uniformity across India (Paras 1-12).
Issue of Consideration
Whether the provisions of the Illegal Migrants (Determination by Tribunals) Act, 1983 are unconstitutional and whether the Foreigners Act, 1946 should apply to Assam.
Final Decision
The Supreme Court declared the Illegal Migrants (Determination by Tribunals) Act, 1983 unconstitutional and upheld the application of the Foreigners Act, 1946 in Assam, emphasizing the need for effective measures against illegal migration.
Law Points
- Public Interest Litigation
- Ultra Vires
- Discrimination
- Constitutional Validity
- Illegal Migration


