Yes, but only the international ones. About 65% of the US population lives in such a zone according to this article: https://www.citylab.com/equity/2018/05/who-lives-in-border-p...

Wow, thats a generous definition of borders.

The linked article does not show it extending 100 miles from international airports. Nor does the text say that.

I don't know the scale of the US so I thought it was 100 miles. I got the 100 mile number from here: https://www.aclu.org/other/constitution-100-mile-border-zone

IIRC no. They wanted to but the FBI gang didn't want the CBP gang dealing on its turf so it got nixed. That doesn't mean it didn't fly under the radar later though.

No it doesn’t. The border zone is for land borders.