Great news, but does this mean that if Trump survives the attempted election steal in November, that if Trump rebuilds the wall, that California (or AZ or NM) can tell him to take a hike?
California could REFUSE to to arrest Illegals, however all Federal authorities would obey Trump and arrest 'em all, where ever they were.
Even the ones hidden in the Governor's Mansion, and they would have a lot of fun searching it.