I said nothing about "help police". Neither does US Code 8, Section 1324, which you obviously are clueless about.
If you had a brain, you would read the statute before posting here & making a fool out of yourself.
Sanctuary city/county/state officials violate US Code 8, Section 1324, by passing laws harboring, shielding & concealing illegal aliens. Furthermore, they have zero escape from prosecution, because all the evidence against them is 100% positively established, in those llegal sanctuary laws.
My guess is that Trump/Homan/Noem/Bonding will lay off them for a while, concentrating more on getting rid of massive numbers of illegal aliens. Once that task is done, they will arrest these big mouth fools, and in some cases, where their crimes have resulted in deaths (ex. Debrina Kawam & Laken Riley) they could (and should) file for the death penalty.