From my (non-lawyer) understanding, if you have a coax cable connected to a cable modem providing Internet to your residence, your privacy is governed by https://www.law.cornell.edu/uscode/text/47/551
Other means of Internet getting to your residence is covered by Title 3 of the ECPA which, historically, Feds have played fast and loose with getting data from.
Other means of Internet getting to your residence is covered by Title 3 of the ECPA which, historically, Feds have played fast and loose with getting data from.