AT&T, Verizon, and T-Mobile declare legal war on FCC
The wireless companies plan to appeal the FCC's $200 million fine over the handling of user location data.
https://mashable.com/article/att-verizon-t-mobile-challenge-fcc-location-data-fine
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Notice they aren't really appealing the fine - any one of them could pay $200M out of petty cash.
They are arguing it was OK and they should be able to continue.