The US has repeatedly said there is no change in its long-standing visa policy relating to Modi but he is free to apply for a visa and await a review like any other applicant.
Last year, Modi's plans to address by video a University of Pennsylvania conference were scrapped following opposition from Indian-American professors, alumni and students.
However, in a sudden u-turn in February, the US signalled the end of its boycott of Modi when its ambassador to India Nancy Powell met him in Ahmedabad.
US Officials have since said whoever is elected India's next leader would be welcome to the US.
