Democrat says moves that upend Russia probes will spark ‘constitutional crisis’Senate Minority Whip Richard J. Durbin warned President Trump and his GOP allies on Sunday not to use a bombshell memo on the FBI’s snooping powers to upend independent probes into Russian meddling in the 2016 campaign, saying it could spark a “constitutional crisis.” Mr. Durbin, Illinois Democrat, said he’s concerned that Mr. Trump will use the Republican-drafted memo to fire Deputy Attorney General Rod Rosenstein, who oversees the scope of the investigation by special counsel Robert Mueller into Russia’s actions and whether the Trump campaign coordinated with the foreign...