US President Donald Trump announced sweeping bans on Thursday on US transactions with China's ByteDance, owner of video-sharing app TikTok, and Tencent, operator of the WeChat app, starting in 45 days, in a major escalation of tensions with Beijing.
The executive orders come as the Trump administration said this week it was stepping up efforts to purge "untrusted" Chinese apps from US digital networks and called the Chinese-owned short-video app TikTok and messenger app WeChat "significant threats."
Tiktok, the hugely popular video-sharing app, has come under fire from US lawmakers and the administration over national security concerning data collection, amid intensified tension between Washington and Beijing.
Trump issued the orders under the International Emergency Economic Powers Act, a law that grants the administration sweeping power to bar US firms or citizens from trading or conducting financial transactions with sanctioned parties.
US Secretary of State Mike Pompeo said on Wednesday expanded efforts on a program it calls "Clean Network" would focus on five areas and include steps to prevent various Chinese apps, as well as Chinese telecoms companies, from accessing sensitive information on American citizens and businesses.
The latest move comes soon after the US ordered China to vacate its consulate in Houston, Texas followed by China's order requiring the US to vacate its consulate in the southwestern city of Chengdu.
US Commerce Secretary Wilbur Ross will identify transactions covered by the prohibition after the order takes effect in mid-September. The order leaves key unanswered questions about the restrictions.
James Lewis, a technology expert with the Washington-based Center for Strategic and International Studies think tank, said the moves appeared coordinated with Pompeo's Wednesday announcement.
China likely to retaliate
"This is the rupture in the digital world between the US and China," he said. "Absolutely, China will retaliate."
Lewis said there are only about 3 million WeChat users in the United States and they are mostly Chinese.
"It's much more a collection risk than TikTok. On the other hand, it is collecting on Chinese," Lewis said.
Tencent shares fell 4% on the news.
Trump said this week he would support the sale of TikTok's US operations to Microsoft Corp if the US government got a "substantial portion" of the sales price but nevertheless said he will ban the service in the United States on Sept. 15.
There are 100 million TikTok users in the United States and Republicans have raised concerns about the political fallout of banning the popular app in the United States.
The TikTok app may be used for disinformation campaigns that benefit the Chinese Communist Party, and the United States "must take aggressive action against the owners of TikTok to protect our national security," Trump said in one order.
In the other, Trump said WeChat "automatically captures vast swaths of information from its users. This data collection threatens to allow the Chinese Communist Party access to Americans' personal and proprietary information."
The order would effectively ban WeChat in the United States in 45 days by barring "to the extent permitted under applicable law, any transaction that is related to WeChat by any person, or with respect to any property, subject to the jurisdiction of the United States, with Tencent Holdings Ltd."
Tencent and ByteDance declined to comment.
(Reporting by Mohammad Zargham, Echo Wang, Nandita Bose and David Shepardson)