Gautam Adani, one of India’s wealthiest individuals and chairman of the Adani Group, has been hit with serious charges in the United States. Prosecutors in Brooklyn, New York, have accused Adani and top executives in his company of paying $250 million in bribes to Indian government officials. The alleged goal? Securing lucrative solar power contracts that helped expand the company’s renewable energy business.

But that's not all. The charges also claim that Adani's team misled US investor...