The first, the ECPA Modernization Act introduced by senators Mike Lee (R-UT) and Patrick Leahy (D-VT), would update the law to require government agencies to get warrants for accessing emails. It would also require warrants for location data (historical and real-time) and reports from the FCC and GAO on law enforcement's mobile data-intercepting Stingray devices. Of course, the proposal deliberately states that its language wouldn't affect any stipulations laid down by the Wiretap Act or FISA.

ECPA Modernization Act by Senator Mike Lee on Scribd

The American Civil Liberties Union applauded the new legislation.

"Technology has advanced rapidly since 1986, but our laws have not. ECPA was passed before the invention of many communications devices commonly used today, including the internet and smartphones. Yet, Congress has yet to follow the examples of many states to update our privacy laws," said ACLU legislative counsel Neema Singh Guliani in a statement. "The proposed bill would make clear that the Fourth Amendment requires law enforcement to get a warrant in order to access emails, location data, and other sensitive information. It would also ensure that the government complies with its obligation to notify individuals when their location and content information is requested."

The second bill, the Email Privacy Act, specifically requires the government to get warrants for emails, no matter how old they are. This ends an ambiguously-worded clause in the original ECPA that didn't require authorities to get a warrant before accessing digital correspondence older than 180 days so long as they were stored on a third-party server.

Email Privacy Act by Senator Mike Lee on Scribd

It's unclear how far these bills will get, given that a House bill updating the ECPA stalled in the Senate last year. The same legislation passed the House again in February and is awaiting the Senate's version.