The video app that once styled itself a joyful politics-free zone is now bracing for a nationwide ban and pinning its hopes on President-elect Donald Trump.

The possibility of the U.S. outlawing TikTok kept influencers and users in anxious limbo during the four-plus years that lawmakers and judges debated the fate of the video-sharing app. Now, the moment ...

Start-ups with Chinese ties have found it increasingly difficult to do business and list shares in the United States.