I predict a nice beefy class action suit will make this an important issue and will at first make the ISPs try to self-regulate with a not-really-independent standards body to come up with working meters.
This will probably happen before the State governments get involved because so few people understand how the internet data flows and metering work.
The strike against self-regulation is that it would probably still be ineffective because they wouldn't want to open up their network operations methodologies and tactics to any party, no matter how thin the wall between their engineers and the standards body engineers would be. It would still be a matter of "trust us, it's working fine".
Self regulation doesn't work, though.
Really, every customer should get on the phone with their state elected representatives to put pressure on getting regulations passed. More calls from more people over time will make them eventually take notice. Nothing else really will, I think.