TikTok is facing yet another call from a prominent lawmaker for the app’s ban, Colorado Senator Michael Bennet, a Democrat who sits on the Senate Intelligence Committee, sent a letter to Apple and Google urging the companies to ban TikTok from their respective app stores.

In the letter, Bennet says that “TikTok, in its current form, [is] an unacceptable threat to the national security of the United States.” The letter, addressed to Apple CEO Tim Cook and Google CEO Sundar Pichai, repeats many of the same points that have been raised by other lawmakers seeking to ban the app.