USA - The stronger dollar era may be on borrowed time. Stephen Roach, one of the world’s leading authorities on Asia, is worried a changing global landscape paired with a massive US budget deficit will spark a dollar crash. “The US economy has been afflicted with some significant macro imbalances for a long time, namely a very low domestic savings rate and a chronic current account deficit,” the former Morgan Stanley Asia chairman told CNBC’s “Trading Nation” on Monday. “The dollar is going to fall very, very sharply.” His forecast calls for a 35% drop against other major currencies.