Minimal real diplomatic consequences, other than China issuing some loud statements that they're furious at the US meddling in their internal affairs. It might

Minimal real diplomatic consequences, other than China issuing some loud statements that they're furious at the US meddling in their internal affairs. It might amount to 100k-300k people as a max range. It's an excellent opportunity for China to demonstrate the superiority of their system, as they so frequently claim. We'll play a little game. Open immigration into China for US citizens. Open immigration into the US for Chinese citizens. Let's see who gets the most immigration (it'd be lopsided 1,000 to 1 with millions of immigrants flowing into the US; we did it with Cuba from ~1960-1980, there's no reason we can't do it for people wanting to flee China; if the next Democrat President is smart, they'll implement a variation of this to create a more aggressive and persistent brain drain on China).