I'd be more than willing to bet that they do. "If you give me six lines written by the hand of the most honest of men, I will find something in them which will hang him." and that only covers "honest" men who wouldn't have illegal coordination with PACs, bribes with lobbyists, personal communications filled with racism, or evidence of sexual activities that might upset their base. When "6 lines" becomes a record of everything you've ever done online, all of your communications, your GPS coordinates and the data of anyone around you it's going to get easier to find a noose around your neck.

Even if there managed to exist a single person in congress who wasn't screwing over the American people somehow for personal gain, or didn't have some skeleton in their closet they didn't want exposed to voters/campaign contributors when a group is capable of compromising your system and inserting whatever offensive material they want to use against you it's incentive enough to back off.