I just want to add the context that ICE did not exist prior to 9/11/2001. it was a consolidation of previously separated powers of investigation, intelligence gathering, enforcement, and incarceration into a single agency under "Homeland Security" and became the largest enforcement arm under "Homeland Security".

there have been calls for it's disbanding since it was started, as it's pretty clearly a dystopian paramilitary with extralegal, unconstitutional powers to run absolutely wild, but as with all Patriot Act related moves, there has been a consistent effort to memory hole it's short history and pretend it is an eternal agency that existed in the US since the dawn of time.