It has become harder for the Asian tigers to prosper through exports

BONNIE TU IS laughing. She just discovered the crisp red “Make America Great Again” hat that a colleague left on her desk as a joke. The chairwoman of Giant, the world’s biggest bike manufacturer, is no fan of Donald Trump. His tariffs have messed with her supply chains and driven up costs. “It’s a tax on biking, the healthiest activity in the world,” bemoans the feisty 70-year-old, an avid cyclist herself. In response, Giant has scaled back production in China and ramped up in Taiwan. “We had no choice,” she says.