In 1945, we termed it De-Nazification. And unless you were a rocket scientist, you went behind some barbed wire until you were sorted. Not sure there are many rocket scientists employed at ICE.
Would it be overreaction if, on Jan 21, 2029, every single employee of ICE/CBP/HSI (whatever the fuck alphabet soup) were to be rounded up and sent to Gitmo until we can sort out the innocents (ha!) from the monsters? I mean every employee, from Homan/Markwayne down to the guy who mops the floors.