White House offers support for US Senate bill that could lead to TikTok ban

In the latest move against the Chinese-owned video app TikTok, a bipartisan group of US senators unveiled legislation on Tuesday that would grant President Joe Biden's administration new powers to ban it and other technologies that could pose security risks - a move the White House applauded.

The bill, introduced by Senator Mark Warner, a Virginia Democrat, and Senator John Thune, a Republican from South Dakota, is called the "Restricting the Emergence of Security Threats that Risk Information and Communications Technology (RESTRICT) Act" and is co-sponsored by 10 other lawmakers from both parties.

The legislation, which does not mention TikTok by name, would empower the Commerce Department to "review and prohibit certain transactions between persons in the United States and foreign adversaries" that pose "undue or unacceptable risk" to national security.

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Adversaries identified by the bill specifically are China, Cuba, Iran, North Korea, Russia and Venezuela.

At a press conference on Tuesday, Warner said the bill would grant a "series of mitigation tools ... up to and including the opportunity to ban. It's genuinely risk based. And it is a rule-bound process, rather than the current ad hoc process." He stressed that the legislation, if passed, would not authorise action against individual users.

Unlike other proposals that focus on presidential powers, the bill updates and codifies authorities granted to the Commerce Department through an executive order issued by former president Donald Trump that manages threats to information and communications technology.

The bill also would require the secretary of commerce to consider threats identified by other government entities and explain to the public why denied or mitigated transactions pose national security risks.

"What brought us to this is not just TikTok," Warner said in an interview with CNBC on Tuesday. "We've had this Whac-A-Mole approach on foreign-based technology for years."

To become law, the bill - which Warner said was drafted in consultation with the White House - would need to pass both the Republican-controlled House and the Senate, where Democrats are in the majority. The House does not yet have a version of the legislation.

Secretary of Commerce Gina Raimondo commended the bill shortly after its introduction, saying that she looked forward to helping it pass.