notably, Chicago Teachers Union have an agreement with Chicago Public Schools that states, among other things, “ICE agents are not permitted to enter CPS school grounds or to obtain or review CPS records, unless they provide to CPS administration their credentials, the reason they are requesting access, and a criminal judicial warrant signed by a federal judge. CPS shall not admit ICE agents based upon an administrative warrant, ICE detainer, or other document issued by an agency enforcing civil immigration law.” – that is likely most of the reason this was rebuffed, and even more of a reason to organize a union or lobby your current union to bargain for sanctuary protections like this. they won’t stop a fully uncaring ICE, but they will make it much harder to do raids and give people more recourse against them