A high-stakes standoff between the U.S. government and social media app TikTok over a potential ban is set for a reckoning on Thursday when TikTok CEO Shou Zi Chew testifies before a committee of House lawmakers.

In written testimony submitted in advance of a Thursday morning hearing, TikTok CEO Shou Chew pushes back hard on calls for a ban on the popular short video service.

TikTok CEO Shou Zi Chew will testify before Congress on Thursday as the social media platform looks to avoid a potential ban or divestment from its China-based parent company.

TikTok's CEO will tell Congress that the company is not operating under the authority of the Chinese government during testimony Thursday that serves to determine whether the popular social media app should be banned.

Congress will hear on Thursday from the CEO, along with opponents and supporters of the app, amid threats to ban the app due to national security concerns. ABC News’ Justin Finch reports.