Just as it has done with previous Fairphone smartphones, Murena will sell the Fairphone 6 in the US. However, this version which will come with e/OS/ will not work with all US networks.https://www.notebookcheck.net/Fairphone-6-lands-in-the-US-via-Murena-for-899-but-there-s-a-caveat.1051850.0.html
I wonder if that's really true, or if the claim is a legacy of the 3G networks, which are decommissioned now in the US. I got the Latin American Galaxy A56, which Amazon listings also say won't work with Verizon, but it actually does.