A TikTok ban would "limit Americans’ political discussion, artistic expression, free exchange of ideas — and even prevent people from posting cute animal videos and memes," the ACLU said in a letter to lawmakers.
Earlier this month, Biden said he was not sure if Washington would ban TikTok, which is owned by Chinese company ByteDance.
Representative Michael McCaul, chair of the House Foreign Affairs Committee, in a statement on Monday, said the legislation "empowers the administration to ban TikTok or any software applications that threaten U.S. national security.
TikTok, he said, "allows (China) to manipulate and monitor its users while it gobbles up Americans' data to be used for their malign activities."
TikTok officials have been on Capitol Hill this month trying to convince lawmakers of its efforts to protect data security.