At the time, he floated the possibility of a joint venture running the company, saying he was seeking a 50-50 partnership between "the United States" and its Chinese owner ByteDance. But he did not give any further details on how that might work.
The Biden administration had argued that TikTok, which has 170 million US users, could be used by China as a tool for spying and political manipulation.
Opponents of a ban have cited freedom of speech as a reason for keeping the platform open.
In 2018, Meta launched a standalone app called Lasso to compete with TikTok but it was later shut down.