Countering the Opposition's charge over the implementation of the Citizenship Amendment Act (CAA), Union Home Minister Amit Shah today said the Congress had opposed the law for "appeasement" and "vote bank politics". But elsewhere in the country in non-BJP states, opposition to the CAA has shot up. In Bengal, the Trinamool Congress says this is a step before the National Register of Citizens is introduced which will result in innocent people being taken to detention camps.