In a 1940 speech to a gathering of U.S. attorneys, Supreme Court Justice Robert H. Jackson said: "The citizen's safety lies in the prosecutor who tempers zeal with human kindness, who seeks truth and not victims, who serves the law and not factional purposes, and who approaches his task with humility.”

Republican critics say none of that describes the newest Senate-confirmed federal prosecutor, Massachusetts U.S. Attorney Rachel Rollins. Doug McKelway explains.