According to an article by POLITICO:
Democratic criticism of the attorney general comes amid media reports that a department probe into the FBI’s investigation connections between Russia and the Trump 2016 campaign has now become a criminal investigation. Rep. Adam Schiff (D-Calif.), the chairman of the House Intelligence Committee, accused Barr on Sunday of “weaponizing” the Justice Department. Meanwhile, Senate Democrats have called on Barr to recuse himself from the department’s investigation.
“Bill Barr, on the president’s behalf, is weaponizing the Justice Department to go after the president’s enemies,” Schiff said on ABC‘s “This Week with George Stephanopoulos.” “He’s demonstrating once again that he is merely a tool of the president, the president’s hand, not the representative of the American people.”
Trump has repeatedly called on Barr to investigate how the FBI began its Russia probe. John Durham, the U.S. attorney for Connecticut, is leading that effort. The Justice Department’s Office of the Inspector General has also been conducting an investigation into aspects of the FBI’s Russia probe. That report is expected to be released in the near future.
Senate Democrats on the Judiciary Committee also sent a letter to Barr on Thursday that questioned the attorney general’s ability to be impartial in any matter related to Trump and Ukraine. In their letter, the senators cited Trump’s July 25 call with President Volodymyr Zelensky of Ukraine, in which he asked Zelensky to investigate the Biden family. During that call, Trump said that both Barr and his personal attorney Rudy Giuiliani would get in touch with the Ukrainian president.