This is an interesting exchange, but, when Mr. Comey addresses the issue it sounds like FISA. FISA already exists. Congress wants to change FISA?

The Judiciary Committee held a hearing today where we discussed whether the government should mandate that manufacturers must include an encryption key in their smartphones that the government could use to access devices. Tell me if you're worried that criminals could use this access too.
Posted by United States Senator Mike Lee on Wednesday, July 8, 2015