Evidence obtained in illegal surveillance would be inadmissible The ruling by the nation's top spy court that at least two of the four warrants obtained by the Obama administration to surveil onetime Trump campaign adviser Carter Page were "not valid" states that the FBI must "sequester all" relevant information and evidence. The notation prompted speculation that convictions obtained in Robert Mueller's special counsel investigation that relied on material obtained from the Page surveillance could be voided. Evidence obtained by authorities through illegal means is not admissible in court cases. The spy warrants were based largely on the infamous "Steele dossier"...