P.28 of the book mentions Yassin v. Weyker (8th Cir. 2022), which held that a local police officer detailed to a joint federal task force acts under color of federal law rather than state law, so any claim is under Bivens rather than § 1983.
The Eighth Circuit reaffirmed that conclusion last summer in a different action against the same cop, rejecting a theory under which an officer can simultaneously act under both state and federal law . SCOTUS denied cert yesterday.
