The legislation seems to be aimed at silencing criticism of the party’s policies in Hong Kong among rights activists, journalists and government officials outside China, experts said.
“The law’s broad extraterritorial scope could well have a chilling effect on overseas NGOs, limiting their ability to partner with Hong Kong groups on sensitive issues like human rights and political reform,” said Thomas E. Kellogg, executive director of the Center for Asian Law at Georgetown University.
Mr. Kellogg said that more restrictions on nongovernmental groups working on issues like human rights, the rule of law and the democratic development in Hong Kong were likely to emerge in the coming months.
The provisions targeting foreigners will most likely worsen tensions between China and the United States, with relations already at their lowest point in decades. The Trump administration has promised a series of punishments in retaliation for the national security legislation, including visa restrictions and limits on exporting defense technology.
On Tuesday, Secretary of State Mike Pompeo criticized the passage of the legislation, tweeting: “The CCP’s draconian national security law ends free Hong Kong and exposes the Party’s greatest fear: the free will and free thinking of its own people.”
He also said in a statement, “The United States will not stand idly by while China swallows Hong Kong into its authoritarian maw.”
Keith Bradsher and Chris Buckley contributed reporting. Yiwei Wang and Amber Wang contributed research.