In a letter to Modi, CPI's Rajya Sabha member M P Achuthan alleged that the US was using the agreement with India for the exchange of data to get biometric information of Indians and asked the new government to order an enquiry about its leakage.
Citing reports, he claimed that the biometric data collected in India was given to NSA and there was "widespread apprehension" about the security of such information collected by the Unique Identification Authority of India (UIDAI) for Aadhaar card.
The Communist leader said that the Intelligence Bureau is learnt to have warned in 2012 about the danger of engaging foreign vendors in the process of Aadhaar Card.
"But the government didn't heed to the concern expressed by the IB. Now the NSA whistleblower Edward Snowden has revealed that US intelligence was collecting biometric data of people from many countries including India.
"Apart from the security, this is a gross violation of the privacy of our people," he said in the letter.