"The third-party doctrine is a United States legal doctrine that holds that people who voluntarily give information to third parties, such as banks and phone companies, generally have "no reasonable expectation of privacy" in that information."

https://en.wikipedia.org/wiki/Third-party_doctrine

The fact that has been a routine practice is egregious, but the bigger insult is the fact that this loophole has been known for quite some time. Yet, our legislators and judiciary have allowed the practices to continue. There’s nothing but foxes in the henhouse.