It would seem to be established precedent that the Secret Service won’t intervene with local law enforcement in cases involving people they are protecting.
On state charges the Marshalls get involved when they want to get involved. They are not compelled to go after every fugitive that has a state warrant.
Won’t intervene doesn’t mean actively help to enforce. As someone who worked under state laws we never even looked at federal law let alone helped enforce it. Federal agencies never touched anything we did. There are interagency task forces that have specific purposes.
That’s true. However it also means that the Secret Service won’t interfere with local law enforcement actions against Trump. It will get interesting when the matter crosses state lines.
The Secret Service presumably wouldn’t do anything one way or another if state officers act on state charges. But what if a warrant comes down from a federal judge? In the normal course of affairs, they’d probably still do nothing and leave that to the Marshals, but if Trump were to try to flee to Russia or something? I don’t think they’d let him do that.
Any Federal court order in these circumstances would, I’m sure, include an order for the Secret Service to do something in particular - detain him, keep him from leaving the country, bring him into court on X date, etc. The judge would be foolish not to issue such an order, if Trump was willfully disobeying earlier orders.