News that Indian billionaire Gautam Adani’s empire faces U.S. fraud charges could not be timed worse for Indian Prime Minister Narendra Modi's economy.

Prime Minister Narendra Modi will find it increasingly difficult to distance himself from the latest controversy erupting around Gautam Adani, one of the world’s richest businessmen who’s widely seen as having close ties with the Indian leader.

The main opposition Congress party has accused Modi and his Bharatiya Janata Party (BJP) of shielding Adani and stonewalling independent investigations into his dealings in the country, charges the ruling party has denied. Congress workers have also held street protests demanding a parliamentary probe.