Either way. The sanctuary states get to go to court and argue why they should be allowed to (best case) passive aggressively stop federal agents from enforcing US federal law. The government can cite as background things like King County, WA denying the use of Boeing Field for migrant flights, for example (that was shot down by a judge already).

Either way, let them argue how Awesome It Is to let a guy that you just arrested for a crime against your citizens go rather than handing him over to ICE (which is enforcing a deportation order or federal arrest warrant). The feds can chime in that they're not going to not pursue the guy, and so that means going into his neighborhood to execute the warrant...potentially resulting in a bad outcomes.

Either way, the blue states can go to court for once and explain this stupidity.