How? By moving this way: Senate Judiciary Committee Approves Overhaul of Electronic Communications Privacy Act – NYTimes.com. As the Times says:
The Senate Judiciary Committee on Thursday approved a bill that would strengthen privacy protection for e-mails by requiring law enforcement officials to obtain a warrant from a judge in most cases before gaining access to messages in individual accounts stored electronically.
Someone on Twitter said that we should thank General Petraeus for this, and they may be correct. His recent situation likely has lead to bipartisan support for updating the law and giving more protection to email (which is more or less the only mail people send or receive these days)
I believe laws for email and other IT need to be updated more frequently (this law was on the books in 1986). Not as often as tech does, but it should be regularly reviewed for relvance.