A partisan combatant, a remorseful blogger: The Senate staffer behind the attack on the Trump-Russia investigation
Jason Foster, chief investigative counsel to the Senate Judiciary Committee, fits a classic Washington profile: A powerful, mostly unknown force at the center of some of the most consequential battles on Capitol Hill. For the last year, Foster — empowered by his boss, Sen. Charles Grassley, R-Iowa, the committee’s chairman — has been the behind-the-scenes architect of an assault on the FBI, and most centrally its role in special counsel Robert Mueller’s investigation of possible collusion between the Trump campaign and Russia, according to interviews with current and former congressional aides, federal law enforcement officials and others. With Foster in charge of his oversight work, Grassley has openly speculated about whether former FBI director James Comey leaked classified information as Comey raised alarms about President Donald Trump’s possible interference in the Russia probe. Grassley and the other Republicans on the committee have questioned the impartiality of a former member of Mueller’s team, cast doubt on the credibility of the FBI’s secret court application for permission to surveil a Trump campaign associate and called for a second special counsel to investigate matters related to Hillary Clinton. A firm that conducted opposition research on Trump has made clear in court it believes Grassley’s committee, with Foster as its lead investigator, had leaked sensitive information about its business.