Two U.S. senators, Marsha Blackburn and Richard Blumenthal, have issued a letter demanding explanations from TikTok regarding an experiment that disabled a vital safety feature for about 15 million American users. The study involved withholding an algorithmic safeguard intended to protect users from overwhelming exposure to harmful content. The senators described TikTok’s decision to carry out this test as “depraved,” highlighting the serious nature of the allegations.

According to Bloomberg’s report, TikTok turned off this safeguard for a control group amounting to 10% of U.S. users to assess whether the safety feature negatively impacted user engagement on the platform. Tragically, this experiment included minors such as Chase Nasca, a 16-year-old who was shown thousands of videos related to sadness, suicide, and loneliness before ultimately dying by suicide. This case has intensified scrutiny of TikTok’s practices and raised urgent questions about the company’s responsibility.

The senators have requested detailed information about the experiment, including the identities of employees involved and the rationale for allowing minors to be part of the control group. They also seek transparency regarding all algorithmic experiments TikTok has conducted in the U.S. that involved disabling or delaying safety mechanisms. TikTok has been given a deadline of September 1 to respond with answers to these 13 pointed inquiries.

TikTok has not yet commented publicly on the senator’s letter or the investigation into their experiment. The incident underscores growing concerns about social media platforms’ impact on mental health, especially for young users, and the ethical implications of testing features that may increase exposure to harmful content in the name of engagement metrics. The outcome of this inquiry could influence future regulatory actions on digital safety measures.