The Foreign Secretary, however, did not confirm if trade-related announcements would be made by Modi and Trump at the event.
A U.S. court on Thursday issued summons against Indian Prime Minister Narendra Modi for committing human rights violations in occupied Kashmir.
Gabbard, who converted to Hinduism early in her life and has become the first-ever Hindu to be running for the presidency in the United States, is highly popular among Indian-Americans.
Gabbard said on Thursday, 'I am happy that Howdy Modi is bringing Indian Americans and Hindu Americans from all over the country.
"Working together, we can contribute to building a more peaceful, stable, secure, sustainable and prosperous world", said Modi.
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He also was an adviser on the Republican presidential campaigns in the past of Ted Cruz, Mitt Romney and Scott Walker. He has also been the only US official consistently working on releasing Americans imprisoned in Iran .
Aside from addressing the United Nations meeting on September 27, Modi may even host a particular occasion on September 24: "Leadership Matters: Relevance of Gandhi in the Contemporary World" to commemorate Mahatma Gandhi's 150th delivery anniversary. India imposed higher tariffs on nearly 30 American products in response to Trump's decision to end trade concessions. The US is a vital partner for our national development, with rich possibilities of partnership in education, skills, research, technology and innovation, and an enabler for India in economic growth and national security.
The Indian PM would be joined by Trump during the event.
India and the US are working toward easing trade tensions, including a possible withdrawal of some disputes from the World Trade Organization, ahead of a meeting between leaders of the two economies, according to people familiar with the matter.
Democratic candidates seeking the party's nomination for the 2020 presidential election include Kamala Harris, whose mother was an Indian-American breast cancer researcher, and Tulsi Gabbard, a Hindu Samoan-American.
PM Modi will also inaugurate the Gandhi Solar Park in NY.
For the first time, India will hold leadership level interactions with the leaders of the Pacific Island States, and leaders of the Caribbean Community and Common Market (CARICOM) group on the margins of UNGA.