investigation to determine whether the president obstructed justice by firing james comey. sarah sanders saying he has no credibility and is an embarrassment to the men and women of the fbi and our great country. more now from cnn's laura jarett. >> good morning, as a new attorney general takes the reigns at the justice department, the former acting director at the fbi laying bare the ghosts of 2017. that period that rocked the justice department and the fbi, and in a new interview with 60 minutes, andrew mccabe says why he felt the need to open an obstruction of justice investigation after the president fired fbi director james comey, and confirms reports that the deputy attorney general rod rosenstein discussed recruiting cabinet members to possibly invoke the 25th amendment to remove trump from office and wearing a wire to record his conversations with the president. in a fresh statement on rosenstein's behalf, the justice department now saying in part,