washington fbi director jam comey thursday meet senior congressional leaders include intelligence committee chiefs fbi congressional officials say officials decline discuss subject comey meet group leaders know gang eight u.s. president donald trump allege obama administration wiretapped election campaign gang eight routine access highly classify materials include house representatives speaker paul ryan minority leader nancy pelosi intelligence committee chairman devin nunes top democrat adam schiff senate members include majority leader mitch mcconnell minority leader chuck schumer top republican democrat intelligence committee senators richard burr mark warner house intelligence committee wednesday ask justice department letter copy document exist could shed light trump allegation law enforcement source say federal bureau investigation discussions national security division justice department respond public congressional inquiries existence non-existence eavesdrop trump campaign advisers indeed wiretapped likely legal path obama administration would justice department ask foreign intelligence surveillance court permission eavesdrop trump accuse predecessor barack obama saturday wiretapping late stag campaign offer evidence allegation obama spokesman say simply false intelligence committee letter address dana boente act deputy u.s. attorney general also ask copy order actually issue court electronic surveillance warrant relate trump associate issue last year federal judge magistrate wide-ranging anti-crime law reuters saw copy letter sign nunes schiff thursday letter publicly release nunes say tuesday see evidence support trump wiretapping allegation law enforcement source say fbi pursue wide-ranging counter-intelligence investigation allege contact trump associate russians well two separate investigations pre-election email hack link russia mainly target democratic political operatives fbi 's comey meet top u.s. congressional leaders