TikTok, the popular video-sharing platform owned by ByteDance, is facing mounting scrutiny and regulatory challenges. Lawmakers in Washington have raised concerns about user data privacy, national security, and potential censorship on the platform. More than a dozen lawmakers have introduced the bill, which is scheduled for a first vote on Thursday. Among them are Representative Raja Krishnamoorthi, the top Democrat, and Mike Gallagher, the Republican chair of the House of Representatives’ select China committee. “This is my message to TikTok: break up with the Chinese Communist Party or lose …