I think there is concern that ICE will act beyond currently understood constitutional / legal principles, and that while HCW don’t want to obstruct justice, they also may not want to eagerly hand over a list of all immigrants in the hospital to a couple of men in black clothes with a badge.
I’m a big constitution / rights / process guy, and the conversation is very similar to the question of what to do if the police show up at your door and ask xyz. I’m not interested in obstructing justice, but I’m also not interested in accidental self-incrimination etc.
There is actually a lot of nuance to the discussion of warrants, so the basic concept that you should defer answering questions to the hospital admin on duty / hospital legal is very reasonable and NOT obstruction
[below from the MA attorney general]
ICE Administrative Removal Warrants (Form I-200) or Arrest Warrants (Form I-
205) authorize ICE officers to arrest a person suspected of violating the immigration laws. These are not warrants within the meaning of the Fourth Amendment to the U.S. Constitution, are not signed by a judge or magistrate judge and are not based on a showing of probable cause of a criminal offense. These warrants do not require healthcare providers to grant ICE officers access to a facility's non-public areas.
Federal Arrest Warrants (Form AO 442) or Search and Seizure Warrants (Form AO
93) are issued by a federal court judge or magistrate judge based on a finding of probable cause and authorize the search and seizure of property in a specified location or the arrest of a person named in the warrant, including in non-public areas. Prompt compliance with these warrants is usually required. If feasible, a healthcare provider should review the document and consult with legal counsel.