▁knows ▁" all ▁of ▁the ▁wr ink les ▁of ▁this ▁stuff ." ▁ ▁On ▁April ▁ 2 5 , ▁ 2 0 1 7 , ▁C iss na ' s ▁nom ination ▁was ▁received ▁in ▁the ▁U . S . ▁Senate ▁and ▁referred ▁to ▁the ▁Committee ▁on ▁the ▁Jud ici ary . ▁He ▁was ▁confirmed ▁by ▁the ▁U . S . ▁Senate ▁on ▁October ▁ 5 , ▁ 2 0 1 7 . ▁ ▁Ten ure ▁In ▁February ▁ 2 0 1 8 , ▁C iss na ▁announced ▁a ▁new ▁mission ▁statement ▁for ▁US C IS . ▁The ▁new ▁mission ▁statement ▁no ▁longer ▁included ▁the ▁phrase ▁" US C IS ▁sec ures ▁America ' s ▁promise ▁as ▁a ▁nation ▁of ▁imm igr ants ." ▁When ▁asked ▁about ▁the ▁removal ▁of ▁this ▁phrase , ▁C iss na ▁said ▁the ▁U . S . ▁is ▁" ind is put ably ▁a ▁nation ▁of ▁imm igr ants " ▁and ▁that ▁the ▁ag ency ' s ▁mission ▁was ▁" not ▁something ▁where ▁you ▁put ▁et ernal ▁prof essions ▁of ▁American ▁values . ▁That ▁sort ▁of ▁thing ▁belongs ▁ch ise led ▁in ▁the ▁wall ▁of ▁a ▁monument , ▁not ▁in ▁some ▁b ureau cr atic ▁mission ▁statement ." ▁ ▁C iss na ▁had ▁a ▁role ▁in ▁the ▁Trump ▁administration ▁family ▁separation ▁policy . ▁ ▁In ▁June ▁ 2 0 1 8 , ▁C iss na ▁issued ▁a ▁new ▁policy ▁mem o ▁direct ing ▁US C IS ▁to ▁investigate ▁" th ous ands ▁of ▁old ▁finger print ▁records ▁and