WASHINGTON — Eight federal prosecutors were fired last year because they did not sufficiently support President Bush’s priorities, Attorney General Alberto Gonzales’ former chief of staff says in remarks prepared for delivery Thursday to Congress. Separately, the Justice Department admitted Wednesday it gave senators inaccurate information about the firings and presidential political adviser Karl Rove’s role in trying to secure a U.S. attorney’s post for one of his former aides, Tim Griffin. In a letter accompanying new documents sent to the House and Senate Judiciary committees, Justice officials acknowledged that a Feb. 23 letter to four Democratic senators erred in asserting that the department was not aware of any role Rove played in the decision to appoint Griffin to replace U.S. Attorney Bud Cummins in Little Rock, Ark. Sampson, in remarks obtained Wednesday by The Associated Press, spoke dismissively of Democrats’ condemnation of what they call political pressure in the firings. ‘The distinction between ‘political’ and ‘performance-related’ reasons for removing a United States attorney is, in my view, largely artificial,’ he said. ‘A U.S. attorney who is unsuccessful from a political perspective … is unsuccessful.’ Democrats have described the firings as an ‘intimidation by purge’ […]