As I've previously written, the Congress has been considering updating the Electronic Communications Privacy Act. The Act, first adopted in 1986, does not have a warrant requirement for government access to the content of older, stored email. I have testified in favor of modernizing ECPA to remove this historical oddity. Today, the House unanimously passed the Email Privacy Act (H.R. 699) today by a vote of 419-0.
Action now moves to the Senate where Senators Mike Lee and Patrick Leahy have introduced a similar measure.
I think it says almost everything you need to know about the possibility of swift Congressional action in this space that the first such proposal to revise ECPA was introduced 3 years ago.