Attorney General Thomas Perez calls GOP Rep. Thomas Perez 's conduct `` shameful '' Issa and Holder spar over emails involving aide Darrell Issa , a GOP nominee . Issa led the effort to cite Holder for contempt of Congress last year in another case . Holder answers questions by GOP .
Attorney General Holder calls GOP Rep. Darrell Issa 's conduct `` shameful '' Issa and Holder spar over emails involving aide Thomas Perez , a Cabinet nominee . Issa led the effort to cite Holder for contempt of Congress last year in another case . Holder answers questions by the House Judiciary Committee .