A criminal referral from top Senate investigators confirms explosive charges in last week’s House Intelligence Committee memo regarding abuse of surveillance authorities at the FBI and Department of Justice. It also reveals a host of problems arising from the bureau’s cooperation with foreign investigator Christopher Steele, who was working on behalf of Hillary Clinton’s presidential campaign. The eight-page memo from Senate Judiciary Committee Chairman Chuck Grassley (R-Iowa) and Crime and Terrorism Subcommittee Chairman Lindsey Graham (R-S.C.) includes underlying evidence to support the claims.“It appears the FBI relied on admittedly uncorroborated information, funded by and obtained for Secretary Clinton’s presidential campaign,...