TikTok Braces for US Divest-or-Ban Law — And a Fresh Legal Fight

After years of working to assure the US government that its popular social media app isn’t a threat to national security, TikTok’s loss in that fight now seems almost inevitable.

The US House of Representatives on Saturday put legislation requiring TikTok’s Chinese parent company, ByteDance Ltd., to divest its ownership stake in the app on a fast track to become law, tying it to a crucial aid package for Ukraine and Israel. The Senate is expected to vote on the bill in the coming days. President Joe Biden has said he will sign the legislation promptly.

That action would ...