Because of China's new security rules for Hong Kong the U.S. no longer considers the financial hub Autonomous from China

partial quote from:
https://www.cnn.com/2020/05/28/uk/uk-hong-kong-bno-china-security-legislation-intl-gbr/index.html

China's move to assert greater control in Hong Kong has also mounted tensions between Beijing and Washington. Following protests in the city Wednesday in which around 300 people were arrested, US Secretary of State Mike Pompeo denounced the law as a "disastrous decision" and "the latest in a series of actions that fundamentally undermine Hong Kong's autonomy and freedoms."

He added that the country would no longer consider the global financial hub as autonomous from China for trade and economic purposes.

CNN's Nectar Gan contributed to this report.