When accused by a Republican lawmaker that his investigation tried to make a 'political case' against the president.
Former Special Counsel Robert Mueller said on Wednesday in his long-awaited U.S. congressional testimony he had not exonerated Donald Trump of obstruction of justice, as the president has claimed.
Trump went on the offensive against James Comey on Friday, deriding the former FBI director as a "leaker" of government information after his damning testimony against the president.
US intel leaders tell Congress they were never pressured by the White House, as they are grilled on reports that President Trump urged them to help ease an FBI probe into an aide's Russia ties.
Ex-FBI director Comey accused Trump of asking him to drop an investigation of former national security adviser Michael Flynn as part of a probe into Russia's meddling in 2016 polls.