sept. 13 story correct bureau name federal bureau investigation paragraph federal bureau information jonathan allen new york two computer technicians decline answer question u.s. lawmakers tuesday unauthorized private email system democratic presidential nominee hillary clinton use tenure u.s. secretary state paul combetta bill thornton repeatedly invoke constitutional right incriminate 10 minutes question oath house oversight government reform committee third technician bryan pagliano decline even appear despite subpoena order testimony investigation clinton email system become troublesome issue presidential campaign republican rival donald trump say recent find federal investigators mishandle classify government secrets email disqualify office brian fallon clinton campaign spokesman say statement technicians whether cooperate certainly prevail upon anyone cooperate sham inquiry clinton say regret use system new york home basement work voters say survey decision contribute feel untrustworthy federal bureau investigation director jam comey say july evidence clinton staff may break law extremely careless handle classify government secrets conclude insufficient ground prosecute combetta thornton work platte river network denver technology firm manage clinton email servers soon leave state department 2013. repeatedly invoke fifth amendment protection self-incrimination question lawmakers jason chaffetz committee republican chairman eventually excuse call respect right elijah cummings committee senior democratic member express sympathy technicians say republicans try use embarrass clinton chaffetz criticize pagliano pay clinton manage server nation top diplomat comply subpoena say committee would decide hear whether punish pagliano give form immunity prosecution 2015 cooperate fbi look mishandle classify information server otherwise cite fifth amendment decline provide information lawmakers attorney respond question fourth witness justin cooper testify two hours role set email system 2009 work clinton family aide clinton use email account senator presidential candidate 2008. cooper say desire change email address number people receive email address course activities summary fbi find show combetta say use software call bleachbit delete archive clinton work email around time conference call clinton lawyers despite lawmakers seek record subpoena clinton server technicians decline question u.s. congress