I mean, yeah. Thats how panama was born for example. Colombia was kinda mad about it at the time but of all the things the US gets shit for its not even in the top 10.
The US also tried to do something similar (and failed) to Kaliningrad. Only Russia objected.
Theres a pretty long history of the US doing this and nobody really minding.
>I'm sure there are some villages along the Russian border who would be happy to see their land turned into a U.S. military base in exchange for U.S. passports and big piles of money.
I wouldnt be so sure. Argentina tried the same thing with the falklanders and it didnt work. Likewise Trump with Greenland.
Villages also wouldnt survive if they were severed economically.
Crimea wasnt bought, anyway. It's just 90% ethnically Russian and objected vociferously to the maidan.