A popular social-networking service is in the firing line of the president of the United States.
Donald Trump has claimed that he has authority to ban TikTok from the country, even though it was the most downloaded app from Apple's App Store in each of the last two years.
There are reportedly 80 million U.S. users.
Founded by Zhang Yiming, TikTok is owned by Beijing-based ByteDance.
TikTok critics, including Secretary of State Mike Pompeo, have claimed that downloading the app enables the Chinese government to gain access to one's personal data.
As a result, TikTok cannot be used on U.S. Army and U.S. Navy devices.
TikTok used to ridicule Trump
The president's talk of banning TikTok came more than a month after teenagers allegedly used this app to sabotage his rally in Tulsa, Oklahoma.
They claimed that they ordered tickets with no intention of showing up. Then when Trump came to deliver his speech, the stadium was full of empty seats.
But a more persistent TikTok presidential problem has come in the form of New York comedian Sarah Cooper.
She's been using TikTok to circulate merciless impersonations of his discussions with reporters.
Cooper's most famous video might be "How to medical", in which she mocked Trump's comments speculating about the value of ingesting disinfectant to counter COVID-19.
The United States leads the world with more than 4.76 million confirmed cases of COVID-19 and 157,898 deaths from the disease.
Microsoft, which is based on Washington state, has reportedly been in discussions to buy TikTok.
Meanwhile, the U.S. general manager of TikTok, Vanessa Pappas, says the app is safe and it's not going anywhere.