ICE (Immigration and Customs Enforcement) tends to treat the Constitution as some ticky-tack policy its officers can safely ignore. That’s not to say ICE believes the Constitution does not exist. It probably at least realizes it exists. After all, it’s a US federal agency. What it firmly believes is that the Constitution provides no protection for the people it targets. As far as it seems to be concerned, immigrants (undocumented or otherwise) aren’t beneficiaries of these enshrined rights.

Case file: https://s3.documentcloud.org/documents/24674998/back-it-down-ice.pdf