FAST AND FURIOUS UPDATE: White House Blocking Access To Fast And Furious Witness Who Wants To Testify. “White House Counsel Kathryn Ruemmler sent a letter Thursday to Republican lawmakers Rep. Darrell Issa and Sen. Chuck Grassley, refusing their request to speak with Kevin O’Reilly, a former National Security staff member whose emails place him in the middle of the unfolding scandal. Issa and Grassley had written to Ruemmler on March 28, asking the White House to step aside and let O’Reilly talk to investigators.”