President Trump is trying to ban WeChat, the wildly popular messaging app that people in China can't live without. Here's everything to know about the app.

· President Trump has issued a new executive order targeting WeChat, the widely-used messaging app that drives daily life in China.
· The order, citing security concerns, would go into effect in 45 days.
· WeChat is the cornerstone of daily interactions and transactions in China, as it's used for everything from mobile...