For decades, the U.S. stood out as the one nation that traditionally preferred its money superpower-strong. Investors flocked to it, enabling the U.S. to borrow lots of money at low interest rates. American consumers feasted on it, buying imported goodies for less. U.S. politicians touted it as evidence of the economy’s eternal dynamism. Then under former President Donald Trump’s “America First” manifesto, the so-called strong-dollar policy was shoved aside, as gains in the currency crimped U.S.