(Credit: YouTube/ Saturday Night Live) It’s been a tough week for the White House human resources department. And “Saturday Night Live” is there to chronicle it. With the dismissal of Andrew McCabe and Rex Tillerson in the same week, the legendary NBC program brought on some old stars to fill the roles of dearly departed staff members from President Donald Trump’s White House — as well as one administration official still there. First, Attorney General Jeff Sessions, played by the always wonderful Kate McKinnon, explained the legal justification of firing Andrew McCabe, the deputy FBI Director: “Mr.