U.S. Attorney General Merrick Garland said the federal grand jury also didn't indict Cosgrove because "the officers who ultimately carried out the search at Taylor's apartment were not involved in the drafting of the warrant and were unaware of the false and misleading statements that it contained."
Everything that came after them obtaining that FRAUDULENT search warrant was an illegal action. FULL STOP! His comrades in blue made him an accessory to multiple crimes and the DoJ gave him a pass.
Edit: The more I think about it, everyone that gave the other officers a pass has just legalized the "I was just following orders" defense!!!