we will have more on that this morning. welcome everybody to a brand new hour of "america's newsroom." i am martha maccallum. >> and i will bill hemmer. they are warning strong encryption allows bad guys to go dark and making them in accessible to authorities. >> catherine heritage is live. what are we expected to hear? >> reporter: the central issue is isis and the encrypted use of communication. this tweet from a known operative overseas was in contact with the shooters in garland, texas and seemed to have knowledge of the plot. this digital world is moving toward encryption and the fbi director is warning that tension