Amazon is locked in a battle for dominance with Walmart-backed Flipkart and Reliance as well as thousands of local traders who have accused the US firm of driving them out of business.
Trump's administration had cited national security concerns in its targeting of TikTok, arguing that the personal data of US users could be obtained by China's government.
Discussions have continued between representatives of TikTok's parent ByteDance and US national security officials.
Amazon, America's second-biggest private employer behind Walmart Inc, does not have any union labor in the United States, and workers at its fulfillment center in Bessemer, Alabama, would be the first to join if they vote in favour.
The last attempt by Amazon workers to unionize was in 2014.
Lore was the co-founder of Jet.com, which Walmart acquired in 2016 to bolster its e-commerce ambitions and was later absorbed into the retail giant's own online business.
In a civil lawsuit in U.S. District Court in Delaware, the government said Walmart failed to take its gatekeeping duties as a pharmacy seriously, allegations the company rejected.
The move will likely stymie the growth of payments services offered by Facebook, Alphabet's Google and Walmart.
More than 2.07 billion UPI transactions were processed in October, according to NPCI, with Walmart's PhonePe accounting for just over 40% of those transactions.
Walmart earnings are expected to be diluted by about 25 cents per share in the first full year following the completion of the transaction - expected in the first half of fiscal 2022.
According to ongoing discussions between the two companies, the super app could be launched as a joint venture between Tata and Walmart, leveraging on the synergies between Tata's e-commerce business and Flipkart, Walmart's e-commerce unit, according to the report.
The retailer revealed plans to join Microsoft Corp in a bid for the social media firm's US assets.
Connecting with a younger audience is vital to Walmart's long-term outlook, especially as more digitally native generations move into their prime consumption years.
