washington u.s. democratic lawmakers call wednesday congressional committee issue subpoena white house three company document fire national security adviser michael flynn letter trey gowdy republican chairman house government reform committee panel democratic members say committee demand document white house refuse hand despite bipartisan request march document relate work proposal build nuclear reactors middle east involvement russian firm three company flynn consultancy two company advise nuclear project produce document communications committee minority members request september 15 compel cooperate democratic members say flynn former national security adviser president donald trump central figure federal probe lead special counsel robert mueller whether trump aid collude russia boost presidential campaign russia deny interfere u.s. election trump say collusion response democrats request wednesday gowdy refer matter mueller deputy attorney general rod rosenstein say kinds allegations flynn handle justice department much seek democratic colleagues properly investigate charge prove beyond reasonable doubt would carry criminal penalties congress prosecute crimes gowdy say letter flynn lawyer robert kelner decline comment committee probe whether flynn fully disclose payments foreign source overseas trip renew top secret security clearance last year one focus probe june 2015 trip flynn former general take israel egypt gauge interest plan float group scientists consultants former military officer build provide security dozens nuclear power plant middle east promotional slide indicate rosoboron russian state-owned arm exporter u.s. sanction part multi-billion dollar project trump fire flynn february top justice department official warn former defense intelligence agency director could blackmail moscow know make mislead statements contact russian officials letter democratic lawmakers argue subpoena need determine whether flynn promote project white house believe paper trail must pursue answer grave question general flynn seek change course country national security benefit private interest previously promote letter say democrats also point discrepancy flynn financial disclosures statements committee counsel ironbridge group inc. ip3 corp. two company set former navy rear admiral michael hewitt promote one two compete plan u.s.-based consortiums build nuclear reactors middle east amend disclosure august flynn say serve advisor ironbridge june 2016 december 2016 period overlap work trump presidential campaign post-election transition contrast counsel ip3 ironbridge tell committee company try hire flynn never accept offer counsel say ip3 ironbridge split members another company acu strategic partner involve russian entities nuclear plan spokesperson ip3 decline comment acu promote plan envision participation government private sector entities russia ukraine israel among countries respond request comment house democrats seek document former trump aide michael flynn