Here are the latest developments:
NDTV has learnt that the protest - reportedly planned outside New York's Waldorf Astoria hotel where the PM is staying - was cancelled following negotiations late last night with a faction seen as supporting Mr Modi.
"We never spoke of protests, always spoke of a welcome rally," said Alpesh Patel, spokesperson of the group that had reportedly planned a show of support for Hardik Patel, who is leading a campaign in Gujarat for reservation for the powerful Patel community.
In New York, PM Modi will attend and address some summits and will also attend a working dinner with CEOs of Fortune 500 companies to discuss investment opportunities in India.
On Saturday morning, just before he leaves for the West Coast, PM Modi will host German Chancellor Angela Merkel, Japanese PM Shinzo Abe and Brazilian President Dilma Rousseff at the Waldorf Astoria hotel in New York.
At that power-packed special summit of what is known as the G-4 group - countries which back each other's bid for permanent seats at the UN Security Council - the Prime Minister will push for a permanent seat for India on the UN Security Council.
From New York, the PM will travel to Silicon Valley where he will visit the Facebook headquarters in California for a Townhall with its CEO Mark Zuckerberg. He will also visit the Google campus and Tesla Motors.
He will also address the 'India-US Start-up Konnect', where Indian startups will present their products to an American gathering.
In San Jose on Sunday, September 27, PM Modi will interact with the Indian community at the SAP Centre, an event that the organisers say will be as grand as his reception at New York's Madison Square Garden last year.
The Prime Minister then heads back to New York where he will meet US President Barack Obama in the last part of his five-day trip. A bilateral meeting with Pakistani counterpart Nawaz Sharif, though, has been ruled out for now by the Foreign Ministry.
Before arriving in the US, PM Modi made a five-hour trip to Ireland and addressed the Indian community in Dublin.