Former CIA Director John Brennan is sworn in on Capitol Hill, Tuesday, May 23, 2017. (Credit: AP/Pablo Martinez Monsivais) Two months after he was originally scheduled to testify in an open hearing that was unexpectedly canceled by House Intelligence Committee chairman Devin Nunes, R-Calif., former CIA Director John Brennan testified before the committee that he had concerns about possible ties between Russia and the Trump campaign. “I was worried by a number of the contacts that the Russians had with U.S.