Calls to ban TikTok are growing ever louder in Washington, D.C. The sensational video-sharing app is in the pockets of 150 million Americans, a figure that explains, at least in part, the grilling of TikTok CEO Shou Zi Chew by U.S. lawmakers at a House Energy and Commerce committee hearing on March 23. Committee chair Cathy McMorris Rodgers said that the social media platform is a “weapon by the Chinese Communist Party to spy on you, manipulate what you see and exploit for future generations.”

While it’s true that ByteDance, TikTok’s Beijing-based parent company, is beholden to Chinese law, there’s no publicly available evidence that the Chinese government itself has spied on people in the U.S. through TikTok. Last year, ByteDance was found to have tracked the IP addresses of journalists covering the company, though the employees who took part in this effort were fired soon after the news came to light. 

TikTok has been under intense regulatory scrutiny since 2019, with policymakers especially concerned about where and how it stores data belonging to U.S. users. As of now, the company says, it sits in its data centers in Virginia and Singapore. However, it’s also working on “Project Texas”: a $1.5 billion plan to route all U.S. user data through the servers of the Austin-based computing giant Oracle, managed through a separate entity called TikTok U.S. Data Security.

At the hearing, Chew said this would act as a “firewall” to protect U.S. user data. But legislators appear unconvinced. Their security concerns have led to a place where U.S. sanctions on TikTok seem like a real possibility. Legal experts caution that a ban might not have legs, due to free speech protections under the First Amendment. But even if it doesn’t stand up in court, restrictions on the app could have significant ripple effects for other China-owned companies, both in the U.S. and other Western countries.