Union Home Minister Amit Shah on January 21 compared the opposition parties with crows over their criticism of the Citizenship Amendment Act (CAA). Shah said Prime Minister Narendra Modi brought CAA, and the opposition including Congress leader Rahul Gandhi, West Bengal Chief Minister Mamata Banerjee and company started doing "kau kau kau" like a crow. Shah made the remarks at a public rally in Lucknow during his 'Jan Jagaran Abhiyan' to spread awareness about CAA. CAB became a law after President Ram Nath Kovind attested the bill on December 12, 2019. CAA officially came into effect on January 10, 2020.