Rep. Trey Gowdy attempts to question FBI director James Comey about how many people have the power to ‘unmask’ the name of a U.S. citizen in communications intercepted by the intelligence services…

Source: http://www.realclearpolitics.com/video/2017/03/20/trey_gowdy_grills_comey_who_has_the_power_to_unmask_a_us_citizens_communications.html