Pakistan, Jan. 28 -- The U.S. dollar fell to near three-week lows against the euro and Swiss franc as renewed tariff threats over Greenland sparked a broad "Sell America" trade, pushing investors to exit U.S. assets. Treasury bonds, stocks, and the greenback all faced selling pressure amid global market volatility.

The dollar index, which tracks its performance against six major currencies, dropped 0.53 percent overnight, marking its worst single-day decline in six weeks. Against the euro, the greenback fell more than one percent to $1.1720, while sliding nearly 1.2 percent to 0.78965 Swiss franc.

Market analysts attributed the dollar slump to fears of prolonged uncertainty, strained alliances, and loss of confidence in U.S. leadership....