TikTok is banning deepfakes because the U.S. government is getting more and more worried about privacy and security. CEO Shou Zi Chew told people about the policy in a TikTok video on Tuesday, two days before he was supposed to talk to congress.

In the video, Chew talked about how important it would be if the government banned Tiktok, which some U.S. lawmakers have discussed in recent months. He said, “Some politicians are talking about banning TikTok.” “This could make it so that all 150 million of you can’t use TikTok anymore.”

He also talked about TikTok’s new rules and standards, which make it clear that deepfakes are not allowed (any synthetic media produced by artificially intelligent technology). Content that has been changed to look real must now be properly labeled as fake.

The global head of product policy for TikTok, Julie de Bailliencourt, said, “These principles are based on our commitment to protect human rights and are in line with international legal frameworks.”