The point is that ICE has been given a mandate to ignore any notion of due process in their handling of immigrants, very visibly and officially. This allows them to deport anyone they want, including American citizens who get on the bad side of the regime, by just claiming that the person is an illegal immigrant and they don't have time for looking at silly papers like a birth certificate.

So ICE, is in fact being shaped into a secret police that can be used to punish anyone speaking against the regime, under the guise of being a brutal anti-immigration force.