Groups says it's time for Congress to require a warrant for searching old emails.
Companies are moving to block even police with a warrant from accessing people's data.
Leahy hoped the ruling would lead to other kinds of digital privacy.
House lawmakers are being asked to support the Email Privacy Act.
Jared Polis asks: "Ever think Eric Holder’s March Madness bracket looked a lot like yours?"
Ireland filed a brief in Microsoft's challenge to a court order.
Google, Microsoft and other titans want police to get a warrant before searching emails.
The bill gained its 218th co-sponsor, giving hope that the legislation could move this year.
Rep. Yoder has legislation to change the decades-old law on email searches.