President Joe Biden on Wednesday revoked executive orders from his predecessor, Donald Trump seeking to ban Chinese-owned mobile apps TikTok and WeChat over national security concerns, the White House said.

A statement said that instead of banning the popular apps, the Biden administration would carry out a "criteria-based decision framework and rigorous, evidence-based analysis to address the risks" from Internet applications controlled by foreign entities.

Trump had claimed the Chinese-owned apps posed national security risks and had sought to force the sale of TikTok, one of the world's most popular social media apps, to US investors.

The effort by the Trump administration prompted a series of legal challenges which delayed the efforts to ban or force the sale of the applications, which heightened tensions between Washington and Beijing.

There was no immediate comment from the two companies.

University of Texas law professor Bobby Chesney, who follows national security issues, called the Biden order "a good middle path".

"They affirmed the nature of the threat and the propriety of using sanctions to address it, and they have held the door open for reimposing some version of these sanctions ... but likely with a far stronger and more defensible record," Chesney tweeted.

Biden in his executive order cites an "ongoing emergency" related to "the continuing effort of foreign adversaries to steal or otherwise obtain United States persons' data".

Biden's order seeks to identify any "connected software applications that may pose an unacceptable risk to US national security and the American people including "applications that are owned, controlled, or managed by persons that support foreign adversary military or intelligence activities, or are involved in malicious cyber activities, or involve applications that collect sensitive personal data".

The new order calls for the Commerce Department and other federal agencies to develop guidelines "to protect sensitive personal data ... including personally identifiable information and genetic information" from misuse.

TikTok, owned by China-based ByteDance, is believed to have about 1 billion users worldwide including more than 100 million in the United States, and is especially popular with young smartphone users.

Last September, US District Judge Carl Nichols issued a temporary injunction at the request of TikTok blocking the effort to ban downloads of the app in the United States.

Trump had given his blessing to a plan that would have given TikTok to US tech giant Oracle with investments from retail powerhouse Walmart, but that deal failed to win approval in Beijing.

WeChat, part of the Chinese tech giant Tencent, is a massively popular "super app" which includes social networking, messaging, e-commerce and more.

The ban on WeChat was also delayed by a lawsuit from users based in the United States claiming the ban infringed on their rights.

The Biden moves come a day after the US Senate passed a sweeping industrial policy Bill aimed at countering the surging economic threat from China and pumping more than US$170 billion into research and development.

The package, a key provision of which addresses a shortage of semiconductors that has slowed US auto production this year, will help American industry bolster its capacity and improve technology.

It is seen as crucial for US efforts to avoid being out-manoeuvred by Beijing as the adversaries compete in the race to technological innovation.

(AFP)

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