text: "9:30 am CT: DHS Secretary Jeh Johnson is testifying before the Judiciary Committee for the first time during our oversight hearing of the Department of Homeland Security. DHS releasing detainees as a ""cost-saving mechanism"" - I'm thinking of asking about that.  What else do you want me to ask Sec. Johnson? Post your questions below and watch live on C-SPAN 2 or online here: http://www.c-span.org/live/?channel=c-span-2"