TikTok logo is displayed on the screen of a smartphone.

U.S. lawmakers are considering changes to address concerns about a bill that would give the Biden administration new powers to ban Chinese-owned TikTok, the chair of the Senate Intelligence Committee who has cosponsored the legislation said on Monday.

Democratic Senator Mark Warner told Reuters that aggressive lobbying by the ByteDance-owned short video app TikTok against the Restrict Act "slowed a bit of our momentum" after it was introduced in March.