DOJ stepping up investigation into former CIA Director John Brennan Rep. Jim Jordan, R-Ohio, discusses how federal authorities are advancing the investigation into former CIA Director John Brennan on ‘Hannity.’ NEW You can now listen to Fox News articles! The Justice Department is turning to former Trump attorney Joeseph diGenova to spearhead a probe into ex-CIA Director John Brennan and others over the origins of the Trump- Russia investigation , as the department reshuffles leadership of the