TikTok is owned by ByteDance, which many Republicans, including Arkansas Gov. Sarah Sanders, have decried as having “significant ties to the Chinese Communist Party.” No critic has been louder than Tom Cotton, who says TikTok is “a Chinese Communist spy app” that “ endangers our national security and poisons our children .”

While Trump gained praise from users for the reprieve, he faces long-time skeptics in his own Republican Party about what they see as the app’s ongoing national security threat.