https://www.cnet.com/news/15-senators-demand-fcc-ftc-investigate-carriers-selling-location-data/

That location data went to about 70 companies, without customers' consent, the Congress members said in the letter. The document is signed by senators including Ron Wyden (D-Ore.), Chuck Schumer, (D-NY), Kamala Harris (D-Calif.), Kirsten Gillibrand (D-NY), and Bernie Sanders (I-Vt.).

"It is clear that these wireless carriers have failed to regulate themselves or police the practices of their business partners, and have needlessly exposed American consumers to serious harm," the letter, addressed to FCC chairman Ajit Pai and FTC chairman Joseph Simons, said.The FTC and the FCC did not respond to a request for comment.