Incoming national security adviser Mike Waltz says that the federal law that could ban TikTok by Sunday also “allows for an extension as long as a viable deal is on the table.”

As a last resort, the platform is preparing for a total shutdown Sunday, the day a U.S. ban is set to go into effect if the Supreme Court doesn’t overrule it.

TikTok CEO Shou Zi Chew plans to attend President-elect Donald Trump's inauguration on Monday as the company confronts a new law with a looming deadline requiring it to sell to a non-Chinese firm or stop operating in the United States,