Trump also said he's been advised "there is no legal path" for the U.S. to keep a cut of whatever TikTok deal the government approves, an idea he had earlier floated.
ByteDance-owned tutoring app GOGOKID employes about 4,000 American teachers. Trump's crack down on TikTok could mean those instructors will lose their jobs.
The White House has targeted the Chinese-owned app with an executive order that would effectively ban it from operating in the U.S. Lawyers for TikTok say the president's action is unconstitutional.
Lawyers for the video-sharing app are likely to say the executive order was unconstitutional, arguing the company was not informed, as is standard, and the national-security concerns are baseless.
The White House is considering a number of economic sanctions to cut off the hugely popular Chinese-owned app from U.S. users over national security concerns.