Joe Biden's new executive order revokes the WeChat and TikTok orders. President Joe Biden on Wednesday withdrew a series of Trump-era executive orders that sought to ban new downloads of WeChat and TikTok, and ordered a Commerce Department review of security concerns posed by those apps and others. The administration of former President Donald Trump had attempted to block new users from downloading the apps and ban other technical transactions that Chinese-owned TikTok and WeChat both said would effectively block the apps' use in the United States. The courts blocked those orders, which never took effect. A separate U.S. national security review of TikTok launched in late 2019 remains active and ongoing, a White House official said, declining to offer any details.