What we have long suspected (see, e.g., here and here) has now been confirmed: The Obama Justice Department and the FBI used the unverified Steele dossier to convince a federal court to issue a warrant authorizing surveillance of a Trump campaign adviser. Confirmation came in the much-anticipated memorandum released today by the Republican-controlled House Permanent Select Committee on Intelligence.

The memo states that the Obama administration concealed from the court that the dossier was commissioned and paid for by the political campaign of Donald Trump’s Democratic opponent, Hillary Clinton. Nor was the court informed that the dossier’s author, former British spy Christopher Steele, told a senior Justice Department official that he was “desperate” to prevent Trump from being elected president.Moreover, despite presenting dossier information as probable cause on four separate occasions — for the initial FISA warrant in October 2016, and three times in the ensuing months — the FBI failed to verify the dossier’s explosive allegations and failed to inform the court that its efforts to corroborate the allegations had been unavailing.

Indeed, the memo relates that the government once presented a news story to the court as corroboration for Steele’s claims, apparently unaware that Steele himself was the source for the news story. The dossier was a compilation of Steele’s reports, based on anonymous Russian sources. His informants provided information based on accounts that were multiple levels of hearsay removed from the events they purported to describe.