Tahawwur Hussain Rana, a key figure in the November 2008 Mumbai terror attacks that claimed 166 lives, is facing challenges in having his Canadian citizenship revoked. Despite being convicted of terrorism-related charges and extradited from the United States to India in April 2022, the Canadian government struggles to revoke his citizenship due to changes in legislation enacted by former Prime Minister Justin Trudeau in 2016. These changes removed terrorism as a basis for citizenship revocation, leaving the Immigration, Refugees and Citizenship Canada (IRCC) with the option of proving that Rana obtained his citizenship through deception. An investigation revealed that he misrepresented his residency in his application, claiming to live in Ottawa while actually residing in Chicago. The revocation process, initiated in May 2024, is expected to take years, raising significant concerns about the effectiveness of Canada's immigration and citizenship system in addressing national security threats.