On May 28, U.S. Secretary of State Marco Rubio announced visa cancellations aimed at Chinese students. Earlier, Harvard's Security and Exchange Visitor Program was revoked, banning the school from admitting international students. In an exclusive interview with CGTN's Tian Wei, Diana Mutz, a professor at the University of Pennsylvania, said the damage is done: Fear is spreading, and studying in the U.S. now feels like "the wrong choice." She warns American research and education depend on Chinese students. From trade to academia, America's unpredictability is eroding global trust.