Social media is awash with videos of federal agents making arrests at immigration court hearings, which are on federal property, inside federal courthouses. What’s different about the detention of Jennifer’s brother is that it took place on the grounds of a state courthouse. By waiting outside the courthouse, immigration agents appear to be complying with California law, though it’s unclear whether the word “courthouse” in the law includes the grounds outside the courthouse. Gavin Newsom signed Saturday meant to keep immigration enforcement agents out of schools and hospitals, it’s unclear what California law enforcement can actually do to enforce the law forbidding immigration agents from making arrests inside courthouses. The state Justice Department’s guidance to state courthouses provides some latitude to immigration enforcement agents.