washington democratic republican congressmen ask national security agency halt report plan share raw intelligence data federal agencies warn policy shift would unconstitutional dangerous accord letter see reuters u.s. representatives ted lieu blake farenthold sit house oversight committee say letter date march 21 nsa director michael rogers proposal would violate fourth amendment privacy protections collect data would require warrant search domestic law enforcement purpose media account true radical policy shift nsa would unconstitutional dangerous lieu california democrat farenthold texas republican write new york time report last month proposal would allow nsa share intercept private communications u.s. intelligence agencies apply privacy protections data bob litt general counsel office director national intelligence tell time obama administration finalize 21-page draft new permissible procedures draft make public civil liberties advocate interpret change potentially allow nsa foreign intelligence data sometimes include collection communications americans use domestic police purpose nsa say analysts scrub certain personal information hand communications data agencies country always draw line military intelligence service domestic police spy lawmakers write use u.s. army apache helicopters quell domestic riot navy seal team take counterfeit ring nsa conduct surveillance domestic street gang executive branch able change rule surveillance program without congressional approval without law congress government rely executive order 12333 sign president ronald reagan 1981 late modify president george w. bush critics say order overly broad vague nsa respond request comment letter congress last year pass law curtail certain aspects nsa surveillance authority notably end bulk collection domestic phone record expose former nsa contractor edward snowden 2013. lawmakers say nsa plan expand share data unconstitutional