TikTok went dark for American users in an unprecedented display of the U.S.-China divide over technology and national security.The app started halting service Saturday night for 170 million users in its most important market shortly before a law took effect requiring it to shed its Chinese ownership or close in the U.

The income president said he will “most likely give TikTok a 90-day extension called for in a law upheld by the Supreme Court yesterday to see it sold or banned by a deadline tomorrow. In a phone interview with Meet the Press moderator Kristen Welker of NBC News,