U.S. lawmakers early Tuesday included a proposal to bar federal government employees from using Chinese app TikTok on government-owned devices in a key spending bill. The Senate last week voted on a bill sponsored by Republican Senator Josh Hawley to bar federal employees from using the ByteDance-owned short video app on government-owned devices. It was the latest action by U.S. lawmakers to crack down on Chinese companies amid national security fears. The ban is in a massive omnibus measure to fund U.S. government operations that is expected to be voted on this week. The bill gives the White House Office…