WeChat is the most popular and widely used app in the world. Over 1 billion people in China use the app to browse online, shop online, send and receive messages and money, and more. U.S. companies like Disney and Walmart use WeChat to get paid by and communicate with their customers in China. The app’s developer, Tencent Holdings, is a Chinese company which explains why the U.S. government is looking to ban the use of the app in the U.S. Many Chinese firms are seen as national security threats that allegedly collect personal data from Americans and U.S. companies, and send that data to Beijing.