Well, the law enforcement ship has sailed a long time ago, it's more of a flotilla by now. Data communication service providers (including ISPs) have some customer identification and data retention requirements in exchange for immunity from the data itself, but otherwise —reasonabke or not— there are more and more traffic policing laws that get introduced for ISPs to abide. By starting a Tor Exit node, you become a service provider, and the same laws start to apply.

It's no joke that we live in a surveillance state, just that some go "full surveillance" like China, while others go "slightly less in-your-face surveillance" like the US/EU.