I remember some journalists used (currently legal) meta-data from data brokers to track the movement of some politicians and later confronted them with it: they were now very much opposed to this being legal.

Now, it seems like someone would need to do that for capital hill .. and then make sure politicians are not voting a law that only exempts them from meta data collection and usage.

Someone really should put up a website that tracks US politicians' locations in real time. It's clear that our government only cares when directly and personally threatened.