New Delhi, April 22 -- The US dollar plunged to a three-year low on Monday following a fresh wave of criticism from President Donald Trump targeting Federal Reserve Chair Jerome Powell, raising concerns over the central bank's independence and denting investor confidence in the US economy.

The dollar index, which measures the greenback against a basket of major currencies, fell as low as 97.923 - its weakest level since March 2022. The dollar also slumped to a decade-low against the Swiss franc and lost ground against several other major currencies, including the euro, yen, and sterling.

The sharp decline followed a series of social media posts from President Trump on Monday, in which he referred to Powell as a "major loser" and reitera...