HONG KONG -- Three years of efforts by two U.S. presidents to crack down on Chinese access to the world's largest capital market are getting a hand from unexpected quarters: Beijing.
Warnings from the top echelons of China's government of tighter oversight of data security and overseas listings, along with slowing growth amid increased regulation, have dramatically raised the stakes for mainland companies with shares traded in the U.S. -- sparking a sharp investor sell-off and threatening forthcoming offerings.
