To be inaugurated by BJP vice president Smriti Irani Sep 20, the convention will be attended by over 1,000 members of the Indian American community.
Modi, who has been denied a US visa since 2005 for his alleged inaction in controlling the 2002 Godhra riots, has reached out to American audiences through satellite a couple of times earlier this year too.
Declining comment on BJP naming Modi as its prime ministerial candidate, the US state department last week said he would still have to apply for a visa like anyone else.
"There's no change in our longstanding visa policy," spokesperson Marie Harf said. But Modi "is welcome to apply for a visa and await a review like any other applicant".
Modi has not applied for a US visa since 2005 when he was denied a diplomatic visa and his previously granted B-1/B-2 visa was revoked.
While there has been no change in the US position officially, the US business has been warming up to the Gujarat leader and the issue is being debated both in the administration and among the lawmakers.
