China is strictly worse than the USA when it comes to border controls. That doesn't mean the USA is good or acceptable in any way; these laws are part of the reason why I don't plan on visiting the country. The USA also has much worse laws on the books, like having to give the authorities your social media passwords to check if you're secretly a terrorist (though that doesn't apply to citizens).

Excessive border patrol power has been around in the USA for ages now, it's all part of the post-9/11 package. I don't think many Americans even know they live in a zone where the border police can do shit like this, even if they haven't left the country, as international airports are usually near big cities, and they have a wide border zone around them. This stuff only really makes it into the news when it happens to one of the "good guys".

FWIW the 100 mile airport border zone thing has been debunked, as the 100 mile zone by statute applies only to land and maritime borders. https://www.aclu.org/know-your-rights/border-zone