Attacking Congress President Rahul Gandhi and Delhi Chief Minister Arvind Kejriwal, Shah said the two leaders care for illegal immigrants for vote bank politics.
The BJP chief, who was addressing a rally here at Ramleela Ground, said that illegal infiltrators are also causing trouble in the national capital, and likened them to termites, action against whom should not worry any patriot.
"After forming government in 2019, the BJP will undertake a nationwide identification of illegal infiltrators living in the country," PTI quoted Shah as saying.
"The illegal infiltrators are acting like termites in this country. They are also causing problems in Delhi. Action against them should not worry any patriot.
"But, whenever we take action Rahul Baba and Kejriwal start complaining. They care for illegal infiltrators because of vote bank politics," Shah said.
The publication of the final draft of the NRC on July 30, which excluded over 40 lakh residents of Assam out of the state's population of 3.2 crore, had intensified the acrimony between the opposition parties and the BJP.
He also dared Rahul Gandhi and Kejriwal to clear their party's stand on the issue.
Attacking efforts of opposition parties to forge a Mahagathbandhan against ruling National Democratic Alliance(NDA) led by the BJP, Shah said his party was ready to take the challenge.
"This Mahagathbandhan has no policy or leader. Rahul wants to lead the bandwagon but leaders like Sharad Pawar, Mamta Banerjee, Mayawati and Akhilesh Yadav are against it," he claimed.
(With inputs from PTI)