I suspect this is a trial balloon. If she can pull this off, every blue state Dem and Biden will try.
If I recall correctly, New Mexico no longer offers LEO’s immunity from actions on duty. Citizens can sue officers if they violate a citizens rights during interactions. I doubt there will be any officer enforce her order, they could be sued.
Don’t just sue the arresting officer, sue Grisham and the officer personally. How can making a flagrantly unconstitutional act be considered part of one’s official duties when such acts are barred? How can a state official claim the right to act outside the US Constitution when they’d sworn an oath to uphold it. They must logically be considered personal acts, not falling under the umbrella provided for acts taken per the rights and duties of a sovereign office. Argument should also apply to any such arresting officer whether or not you correctly recall NM LEO immunity law.