NEW YORK - President Donald Trump's demand that the U.S. government get a cut from a potential Microsoft purchase of TikTok is the latest unprecedented scenario in an unprecedented situation.Microsoft is in talks to buy parts of TikTok, a forced sale after Trump threatened to ban the Chinese-owned video app, which claims 100 million U.S.
users and hundreds of millions globally. The Trump administration says TikTok is a national-security concern. How a ban would have worked was not clear; that federal authority has never been used before with a consumer app.