Congress has literally said it’s about foreign influence
Which is also a lie. The likes of Twitter, Facebook and Google are just as beholden to foreign governments such as the fascist regimes of India, Israel, Myanmar and others. They pay the people in Congress a lot more in legal bribes, though, so they can basically get away with anything.
It’s not a ban, if China gives up control of the app to a United States entity then there’s no problem.
Imagine the uproar if China demanded that Google stopped being a US military contractor..
What the whole thing is about is empty symbolic rhetoric and xenophobia in an election year and oppressive measures to go with it.