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.

Some users saw the social media app come back online on Sunday, following a shutdown when a federal law went into effect requiring a sale or ban.

Even if temporary, the unprecedented shutdown of TikTok is set to have a wide-ranging impact on U.S.-China relations, U.S. politics, the social media marketplace and millions of Americans.