Advisers to Donald Trump have discussed having the incoming president sign an executive order to “save” TikTok shortly after he’s sworn in Monday in the Capitol Rotunda — in the presence of the video app’s chief executive as well as lawmakers who backed legislation to ban the app as a national security threat.

President-elect Donald Trump says he plans to issue an executive order that would give TikTok’s China-based parent company more time to find an approved buyer before the popular video-sharing platform is subject to a permanent ban in the U.