Privacy advocates got access to Locate X, a phone tracking tool which multiple U.S. agencies have bought access to, and showed me and other journalists exactly what it was capable of. Tracking a phone from one state to another to an abortion clinic. Multiple places of worship. A school. Following a likely juror to a residence. And all of this tracking is possible without a warrant, and instead just a few clicks of a mouse.
Although we already know what would likely happen if someone did that. It would just be made illegal to track the locations of congresspeople (and only congresspeople), like it was made illegal to do so during the BLM protests.
Just like how the moment their videotape rental history was exposed, that was when privacy became an absolute must in the case of video rental services.