https://arstechnica.com/tech-policy/2019/08/cable-industry-fights-plan-to-require-robocall-detection-technology/

The cable industry is fighting an attempt to require deployment of robocall-detection technology.

Some phone providers have already begun deploying the technology in question, which is called SHAKEN/STIR. The technology authenticates callers with digital certificates to prevent spoofing of Caller ID numbers. But Charter—the lobby group that represents Comcast and other cable companies—wants to make sure the Federal Communications Commission doesn't impose any deadlines on the rollout.