▁files ▁to ▁determine ▁whether ▁foreign ers ▁made ▁false ▁or ▁fra ud ul ent ▁statements ▁in ▁their ▁attempts ▁to ▁obtain ▁legal ▁res iden cy ▁in ▁the ▁United ▁States ." ▁ ▁According ▁to ▁a ▁September ▁ 2 0 1 8 ▁profile ▁in ▁Polit ico , ▁as ▁the ▁head ▁of ▁US C IS , ▁C iss na ▁has ▁" transform ed ▁his ▁ag ency ▁into ▁more ▁of ▁an ▁enfor cement ▁body ▁and ▁less ▁of ▁a ▁service ▁provider ." ▁ ▁Res ignation ▁On ▁April ▁ 7 , ▁ 2 0 1 9 , ▁rum ors ▁began ▁to ▁float ▁that ▁White ▁House ▁ad visor ▁Stephen ▁Miller ▁was ▁press uring ▁for ▁the ▁replacement ▁of ▁C iss na ▁as ▁part ▁of ▁larger ▁pur ge ▁of ▁imm igration ▁and ▁hom eland ▁security ▁officials ▁in ▁the ▁Trump ▁administration . ▁ ▁S ources ▁indicated ▁that ▁Jul ie ▁Kirch ner , ▁the ▁former ▁executive ▁director ▁of ▁the ▁Federation ▁for ▁American ▁Im m igration ▁Reform ▁( FA IR ), ▁which ▁push es ▁for ▁lower ▁levels ▁of ▁imm igration , ▁was ▁being ▁considered ▁as ▁an ▁option ▁to ▁lead ▁the ▁ag ency . ▁Le aders ▁of ▁anti - imm igration ▁groups , ▁including ▁Ros em ary ▁Jen ks ▁at ▁Num bers USA , ▁R J ▁Human ▁at ▁FA IR , ▁and ▁Mark ▁K rik or ian ▁at ▁Center ▁for ▁Im m igration ▁Studies , ▁pushed ▁for ▁C iss na ▁to ▁remain ▁at ▁the ▁head ▁of ▁US C IS , ▁calling ▁him ▁effective ▁at ▁his ▁work ▁and ▁skill full ▁within ▁the ▁bounds ▁of ▁the ▁law ▁at ▁restrict ing