This is NBC Nightly News with Jose Diaz Ballard.

Good evening. The battle over TikTok's fate is now going down to the wire. It's hard to

overstate just how important TikTok is for so many Americans. It's not just a place for goofy

dance videos, but it's a commerce site, a communications tool, and a source of income for many.

But as the clock hits midnight tonight, it very well could shut down here in the U.S.

170 million American users shut out.

Billions of videos vanishing, all due to a legal and political standoff that has no clear off-ramp in sight.

Today, TikTok the company and the White House in a war of words.

The Biden administration saying the app's fate is in the hands of the incoming Trump administration.

But just hours ago, President-elect Trump spoke exclusively to NBC, weighing in on the standoff.

Savannah Sellers starts us off tonight.

Tonight, TikTok is demanding action from the Biden administration saying that without necessary

clarity and assurance, the app will be forced to go dark for its more than 170 million

American users tomorrow.

It hurts, like, it hurts me.

Users flooding the video sharing tool with farewell messages.

I think it's time we say goodbye.

It's a really sad day today, man.

I'm not going to lie.

In a phone call with NBC's Kristen Welker, President Elect Trump said delaying the need for a shutdown with a 90-day extension is something that will be most likely done and that he could have an announcement on his decision as soon as Monday.

But at issue right now in the final hours of the Biden administration, are the service

providers essential for helping TikTok operate.

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