The Commerce Department says it will ban all U.S. business transactions with Chinese-owned apps WeChat and TikTok. The parent company ByteDance is under pressure to sell TikTok to a U.S. company.
When Paradise, Calif., burned in 2018, some people died for lack of timely notice of imminent danger. Apps and systems to warn the public have advanced since, but they're still not perfect.
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.
The announcement is the latest in a series of official measures and public condemnations by U.S. officials in response to what they call an epidemic of cyber-espionage emanating from China.
Some of the most prominent users of the social media platforms called for a boycott to protest Facebook's failure to control disinformation and hate speech as part of the campaign #StopHateForProfit.
An investigation into the troubled plane's development and certification finds a "disturbing pattern" of Boeing design flaws, management failures and "grossly insufficient oversight by the FAA."
Senators pressed the tech giant on the scope and scale of its digital advertising business. Republicans repeated long-running allegations of conservative bias.