The letter and the deadline
Two U.S. senators are pressing TikTok for answers about an experiment that disabled a safety safeguard for 15 million American users. The company has until September 1 to respond.
Senator Marsha Blackburn (R-TN) and Senator Richard Blumenthal (D-CT) sent a letter to TikTok CEO Shou Chew and Adam Presser, who heads TikTok’s U.S. operations. The senators didn’t mince words, calling the experiment “depraved.”
The letter demands responses to 13 specific questions. Among them: the names of every employee who knew about the experiment, and why TikTok allowed minors to be part of the control group. The senators also want a full list of every algorithmic experiment in the U.S. where TikTok disabled or delayed a safety feature.
What TikTok did
According to Bloomberg, TikTok intentionally turned off an algorithmic safeguard for 10% of its U.S. user base. The safeguard was designed to stop users from being flooded with harmful content. But TikTok wanted to know if that feature made the app less engaging. So it ran an experiment.
The result? A control group of 15 million people got no protection. Among them was 16-year-old Chase Nasca, whose feed served him thousands of videos about sadness, suicide, and loneliness—right up until he died by suicide.
That’s the core of the senators’ outrage. A teenager’s death happened while TikTok was testing whether safety got in the way of engagement.
Why this matters beyond one case
This isn’t just about one company’s bad call. It raises a broader question: how far will platforms go to keep users hooked?
If TikTok ran a test like this on minors, what else has it done? The senators’ request for a list of every experiment that disabled a safety feature suggests they suspect this wasn’t a one-off.
It also echoes past concerns about algorithmic design. social media’s effect on teen mental health has been a hot topic for years, and this case gives critics concrete evidence of a platform prioritizing engagement over well-being.
The human cost
Chase Nasca’s story is the kind that should give any parent pause. He was part of an experiment he never signed up for. His algorithm pushed him toward darkness, and no safeguard was there to intervene.
TikTok’s defense might be that the experiment was meant to improve the app. But the senators aren’t buying it. They’re demanding accountability, and they’re giving the company a clear deadline.
What happens next
TikTok hasn’t responded to TechCrunch’s request for comment yet. The September 1 deadline is fast approaching.
If TikTok doesn’t comply, the senators could escalate. That might mean public hearings, subpoenas, or new legislation. The pressure is mounting, and this time, it’s not just about TikTok data privacy practices—it’s about whether the platform’s algorithms are safe for the people who use them.
For now, the ball is in TikTok’s court. The company will have to decide whether to come clean about its experiments or face the consequences.
