《First, India’s internal intelligence agency, the Intelligence Bureau had pointed out that the act would involve a “strict antecedent verification process” for anyone claiming religious persecution in order to “ensure that undesirable elements do not take advantage of these provisions”. It is unclear how migrants fleeing persecution would be able to prove their own persecution. This is especially so since neither Pakistan, Afghanistan or Bangladesh would help India in this regard.
Second, the Intelligence Bureau also claimed that migrants had to declare persecution as reason for migration at the time they arrived in India If they had not done so, “it would be difficult for them to make such a claim now”. This would immediately shrink the scope of the CAA, since only a very small number of migrants have made such a declaration.
Third, critics of the act have also pointed to a paradox. If the legislation is meant for undocumented migrants, how can particulars like religion, country of origin or date of entry into India (as per the cut off, December 31, 2014) be proved at all?
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These significant flaws in CAA have led to the Intelligence Bureau identifying that only a very small number of migrants will benefit from the legislation: around 30,000.》