Yet Auten and his Crossfire teammates -- who referred to the dossier as ‘Crown material,’ as if it were valuable intelligence from America’s closest ally, Britain -- never informed a secret surveillance court that the dossier was a bust. Instead, they used it as the basis for all four warrant applications to spy on Carter Page, a tangential 2016 Trump campaign adviser. Former acting FBI Director Andrew McCabe, who personally signed and approved the final application, has testified that without the dossier, the warrants could not have been obtained.