FILE - In this Nov. 12, 2014 file photo, Sen. Sherrod Brown, D-Ohio, leaves the Senate chamber after a roll call vote, at the Capitol in Washington. Brown, the top Democrat on the Senate Banking Committee, on Wednesday, Oct. 14, 2015 called for the credit agency Experian to disclose more details about a data breach in which personal information on millions of T-Mobile customers was stolen. (AP Photo/J. Scott Applewhite, File)