Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. US Steps Up Campaign to Purge 'Untrusted' Chinese Apps Reuters WASHINGTON - The Trump administration said on Wednesday it was stepping up efforts to purge "untrusted" Chinese apps from U.S. digital networks and called the Chinese-owned short-video app TikTok and messenger app WeChat "significant threats." U.S. Secretary of State Mike Pompeo said expanded U.S. efforts on a program it calls "Clean Network" would focus on five areas and include steps to prevent various Chinese apps, as well as Chinese telecoms companies, from accessing sensitive information on American citizens and businesses. Pompeo's announcement comes after U.S. President Donald Trump threatened to ban TikTok. The hugely popular video-sharing app has come under fire from U.S. lawmakers and the administration over national security concerns, amid intensified tensions between Washington and Beijing. "With parent companies based in China, apps like TikTok, WeChat and others are significant threats to personal data of American citizens, not to mention tools for CCP (Chinese Communist Party) content censorship," Pompeo said. TikTok currently faces a deadline of Sept. 15 to either sell its U.S. operations to Microsoft Corp or face an outright ban. .