Last April, Congress passed legislation forcing TikTok’s Chinese owner, ByteDance, to divest from the app or face a US ban. The companies asked the courts to strike down the law, known as the Protecting Americans from Foreign Adversary Controlled Applications Act. But the Supreme Court upheld the measure on January 17, just two days before the ban was set to take effect and three days prior to Donald Trump’s inauguration as US president.

While TikTok briefly went dark before Trump’s swearing in, he has since halted enforcement of the law and his administration is looking to broker a deal to stave off a ban for good. The success of those efforts will ultimately decide the popular video-sharing app’s fate in the US, where it has developed a massive following but drawn national security concerns from public officials.

Here is a timeline of these events, starting from the law’s passage.

2024

April 20-24

• Both chambers of Congress overwhelmingly pass the Protecting Americans from Foreign Adversary Controlled Applications Act as part of HR 815, a national security and foreign aid spending bill, and President Biden signs it into law. It gives ByteDance 270 days — or until January 19, 2025 — to sell the platform. If not, app stores and other digital service providers must cease making the app available or face steep fines.

May 7

• ByteDance and TikTok challenge the law in federal court. A week later, a group of TikTok creators file their own lawsuit. The groups allege the law violates their constitutional free speech rights.

September 16

• The US Court of Appeals for the DC Circuit holds oral arguments in TikTok, Inc. v. Garland. The Biden administration argues in defense of the law. Judges appear skeptical of TikTok’s arguments against the measure.

December 6

• The Court of Appeals rules for the government, upholding the law as constitutional. This leaves the Supreme Court as TikTok's last hope to defer or strike down the sale-or-ban law in court.

December 18

• The Supreme Court agrees to take up and expedite the case.

December 19

• Sens. Ed Markey (D-MA) and Rand Paul (R-KY) pen a letter to then-President Joe Biden urging him to grant ByteDance a one-time 90-day extension to sell TikTok, a right afforded the president under the ban-or-sale law.

2025

January 10

• The Supreme Court holds oral arguments in the appeal of the lower court’s ruling.

January 14-15

• Markey and other Democratic lawmakers announce legislation to give ByteDance 270 more days to sell TikTok before a ban takes effect. Sen. Tom Cotton (R-AK), chair of the Senate Intelligence Committee, blocks the extension bill the following day.

January 15-16

• According to multiple press reports, Biden administration officials signal that the president does not plan to invoke the one-time extension, but that enforcement of the potential Jan. 19 ban will fall to the incoming Trump administration.

January 17

• The Supreme Court releases its decision on TikTok’s bid to enjoin the law, upholding the constitutionality of the Protecting Americans From Foreign Adversary Controlled Applications Act. The ban is now slated to take effect on Jan. 19.
• Then-White House press secretary Karine Jean-Pierre issues a statement reiterating that “actions to implement the law must fall to the next Administration.” Deputy Attorney General Lisa Monaco, whose department is poised to enforce the law, says in a statement that implementation of the law “will be a process that plays out over time.”
• TikTok says in a statement that the Biden administration’s remarks “failed to provide the necessary clarity and assurance” to stave off a ban and that the app will go dark on January 19 absent “a definitive statement to satisfy the most critical service providers assuring non-enforcement.”

January 18

• President-elect Donald Trump tells NBC in an interview that he will “most likely” give TikTok an additional 90 days to divest before enforcing the ban. During the presidential campaign, Trump repeatedly said he wanted to “save” TikTok, without elaborating how.
• TikTok notifies users that it will become unavailable in the US due to the law coming into effect via in-app pop-up messages.
• A couple hours before the ban officially takes effect, the app begins to go dark in the US.

January 19

• TikTok becomes unavailable for updates in app stores run by Google and Apple, and TikTok in-app content becomes largely inaccessible, with a pop-up message on the site praising the incoming Trump administration for pledging to broker a “resolution."
• Trump posts on Truth Social:
  
  “I’m asking companies not to let TikTok stay dark! I will issue an executive order on Monday to extend the period of time before the law’s prohibitions take effect, so that we can make a deal to protect our national security. The order will also confirm that there will be no liability for any company that helped keep TikTok from going dark before my order.”
  
  The post goes on to suggest that the US should get a 50 percent stake of TikTok in a new ownership deal.
• TikTok posts a statement on X indicating that Trump has given “the necessary clarity and assurance to our service providers that they will face no penalties” and that service will be restored shortly.
• Just 14 hours after it began to go dark, TikTok returns for US users with an in-app message crediting Trump. Reports state that Oracle, TikTok’s main US cloud service provider, and Akamai, its content delivery network (CDN), have resumed their activity despite the ban due to Trump’s public assurances.

January 20

• Shortly after his inauguration, President Trump issues an executive order “instructing the Attorney General not to take any action to enforce the Act for a period of 75 days,” and giving other assurances to the affected service providers. The order’s boilerplate disclaimers raise just some of the questions about the legal weight of the order. The executive order sets up a new deadline for a deal: April 5.

January 25

• NPR reports that Oracle and a group of US investors are in the running to take over TikTok’s global operations and buy a majority stake in the app under a White House-brokered deal. Oracle already supports TikTok’s operations and was identified as the US party who would participate in safeguarding American users’ data in the “Project Texas” plan that TikTok proposed in 2022.

February 7

• Vice President J.D. Vance is tasked with finding a potential buyer for TikTok that is acceptable to the administration before the deadline of April 5.

February 13

• Google and Apple restore TikTok to their app stores, after receiving written assurances from the Justice Department that they will not be subject to liability for doing so during the extension period referenced in the January 20 executive order.

March 14

• Vance tells NBC News that he expects to broker a “high-level agreement” over TikTok’s fate by the April 5 deadline, though final details and paperwork may take longer. Vance says it will likely result in “a distinct American TikTok enterprise.”

March 16

• Politico reports that Oracle is in “advanced” talks to run TikTok, though “significant concerns remain about what role the app’s Chinese founders will play in its ongoing U.S. operation.” The potential deal is likened to a “Project Texas 2.0.”

March 18

• Rep. John Moolenaar (R-MI), the new chairman of the House Select Committee on China, warns in an op-ed that a rumored deal where ByteDance would retain some level of control over TikTok’s algorithm and data would be unacceptable under the law.

March 24

• Sen. Cory Booker (D-NJ) and other Democrats urge Trump in a letter to work with Congress on amending the Protecting Americans from Foreign Adversary Controlled Applications Act so as to provide more legal certainty regarding TikTok’s future.

March 27

• Trump tells reporters that he would be willing to reduce tariffs on goods from China in return for their cooperation in allowing ByteDance to sell TikTok.

March 30

• With the new deadline approaching, Trump suggests that the prospects for an imminent deal are good, though seemingly leaves the door open to another extension.