FBI Director James Comey recently spoke in front of lawmakers, again saying encryption is making things difficult for law enforcement. Silicon Valley wants to keep user data secure, and many services provide encryption and enhanced security measures - but it hasn't made the FBI and other agencies happy.
"Our job is to look at a haystack the size of this country to find needles that are increasingly invisible to us because of end-to-end encryption," Comey told the US Senate Committee on the Judiciary. "People watch TV and think the FBI as a way to break that encryption... we do not."
Of course, the federal government wants a backdoor to access private user data, while tech companies and privacy advocates argue about security and privacy issues.