A group of US tech investors has launched an ambitious plan to buy TikTok from its Chinese owner, as the popular short-video app tries to escape being banned by the White House.The investors, led by the venture capital firms General Atlantic and Sequoia Capital, are in discussions with the US Treasury and other regulators to see if spinning out TikTok and firewalling it from its Chinese parent would satisfy US concerns about the app, according to two people involved in the process.Last weekend, President Donald Trump’s election campaign placed ads on Facebook suggesting that TikTok was...…A group of US tech investors has launched an ambitious plan to buy TikTok from its Chinese owner, as the popular short-video app tries to escape being banned by the White House.The investors, led by the venture capital firms General Atlantic and Sequoia Capital, are in discussions with the US Treasury and other regulators to see if spinning out TikTok and firewalling it from its Chinese parent would satisfy US concerns about the app, according to two people involved in the process.Last weekend, President Donald Trump’s election campaign placed ads on Facebook suggesting that TikTok was...WW…